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Simulaciones

• Adición de Vectores (HTML5)
• Adición de Vectores: Ecuaciones (HTML5)
• Ajustando la Curva (HTML5)
• Alimentación & Ejercicio
• Aritmética (HTML5)
• Aterrizaje Lunar
• Bajo Presión (HTML5)
• Balanceando Ecuaciones Químicas (HTML5)
• Cambio de Expresión (HTML5)
• Campo Eléctrico de Hockey
• Canales de una Membrana
• Carga Radiante
• Cargas y Campos (HTML5)
• Circuito de la Resistencia de una Batería
• Comparación de números (HTML5)
• Conductividad
• Constructor de Áreas (HTML5)
• Construye una molécula (HTML5)
• Construye un Núcleo (HTML5)
• Control de Óptica Cuántica
• Creador de Funciones:Conceptos Básicos (HTML5)
• Cuadrilátero (HTML5)
• Curvando la luz (HTML5)
• Davisson-Germer: Difracción de Electrones
• Densidad (HTML5)
• Desintegración Alfa
• Dispersión de Rutherford (HTML5)
• Distribuciones de muestreo de proyectiles (HTML5)
• Efecto Fotoeléctrico
• Efecto Invernadero (HTML5)
• El Efecto Invernadero
• Emparejador de Fracciones (HTML5)
• Energía en el Parque del Patinador:Fundamentos (HTML5)
• Kit de Construcción de Circuitos: AC (HTML5)
• Kit de construcción de circuitos: CA - Laboratorio virtual (HTML5)
• Equipo de Construcción de Circuitos: DC (HTML5)
• Equipo de Construcción de Circuitos: DC - Laboratorio Virtual (HTML5)
• Escala de pH (HTML5)
• Escala de pH: Conceptos Básicos (HTML5)
• Espectro del cuerpo negro (HTML5)
• Estados de la Materia (HTML5)
• Estados de la Materia: Fundamentos (HTML5)
• Estados Enlazados Cuánticos
• Estimación
• Estiramiento del ADN
• Estructura de Banda
• Experimento de Stern-Gerlach
• Explorador de Igualdad (HTML5)
• Explorador de Igualdad: Dos Variables (HTML5)
• Explorador de Igualdad: Fundamentos (HTML5)
• Expresión Génica - Fundamentos (HTML5)
• Expresión Génica - Fundamentos
• Fisión Nuclear
• Flotabilidad (HTML5)
• Flotabilidad: conceptos básicos (HTML5)
• Formas de una Molécula (HTML5)
• Formas de una molécula: Fundamentos (HTML5)
• Formas y Cambios de Energía (HTML5)
• Fourier: Haciendo ondas (HTML5)
• Fourier: Haciendo Ondas
• Fracciones: Igualdad (HTML5)
• Fracciones: Introducción (HTML5)
• Fracciones: Números Mixtos (HTML5)
• Frecuencias Resonantes
• Fricción (HTML5)
• Fuerzas en 1 Dimensión
• Fuerzas y Movimiento
• Fuerzas y Movimiento:Fundamentos (HTML5)
• Glaciares
• Globos y Electricidad Estática
• Globos y Flotabilidad
• Graficador para cálculo (HTML5)
• Graficador de Ecuaciones
• Graficando Líneas (HTML5)
• Haz una Fracción (HTML5)
• Haz un Diez (HTML5)
• El Hombre en Movimiento
• Imán y brújula (HTML5)
• Interacciones Atómicas (HTML5)
• Interferencia de Onda Cuántica
• Interferencia de Ondas (HTML5)
• Introducción a los Gases (HTML5)
• IRM Simplificado
• Isótopos y Masa Atómica (HTML5)
• Juego de Datación Radiactiva
• Juego del Laberinto
• Juego de números (HTML5)
• Juegos de Proporciones (HTML5)
• Laboratorio de Colisiones (HTML5)
• Laboratorio de Condensadores
• Laboratorio de Condensadores: Básico (HTML5)
• Laboratorio de Datos de Proyectiles (HTML5)
• Laboratorio de la Ley de Beer (HTML5)
• Laboratorio de Péndulos (HTML5)
• Lanzamiento de moneda cuántica (HTML5)
• Láseres
• Ley de Equilibrio (HTML5)
• Ley de Faraday (HTML5)
• Ley de Hook (HTML5)
• Ley de Ohm (HTML5)
• Leyes de Kepler (HTML5)
• Máquina Génica: El Operon Lac
• Masas y Resortes (HTML5)
• Masas & Resortes
• Masas y Resortes: Fundamentos. (HTML5)
• Media: Comparte y equilibra (HTML5)
• Mi sistema solar (HTML5)
• Mocroondas
• Modelo de Área. Introducción (HTML5)
• Modelo de área con decimales (HTML5)
• Modelos del átomo de hidrógeno (HTML5)
• Modelos del Átomo de Hidrógeno
• Molaridad (HTML5)
• Moléculas y Luz (HTML5)
• Motores Moleculares
• Movimiento de la Mariquita 2D
• Movimiento de un Proyectil (HTML5)
• Movimiento en 2D
• Neurona (HTML5)
• Ondas en una cuerda (HTML5)
• Ondas de Radio & Campos Electromagnéticos
• Pares de números (HTML5)
• Parque de patinaje de la energía (HTML5)
• Placas Tectónicas
• Polaridad de la Molécula (HTML5)
• Polaridad de la Molécula
• Presión de Fluido y Flujo
• Probabilidad Plinko (HTML5)
• Propiedades de los gases (HTML5)
• La Rampa
• Rampa: Fuerzas y Movimiento
• Razón y Proporción (HTML5)
• Reaccionantes, Productos y Sobrantes (HTML5)
• Reacciones Reversibles
• Recorrido Trigonométrico (HTML5)
• Recta numérica: Distancia (HTML5)
• Recta Numérica: Enteros (HTML5)
• Recta numérica: Operaciones (HTML5)
• Representación Intercepto-Pendiente (HTML5)
• Resistencia en un Alambre (HTML5)
• Resonancia
• Revolución de la Mariquita
• Sales & Solubilidad
• Selección Natural (HTML5)
• Semiconductores
• Señal del Circuito
• Soluciones Ácido-Base (HTML5)
• Soluciones de Azúcar y Sal
• Tasas o Razones Unitarias (HTML5)
• Torque
• Túnel Cuántico y Paquetes de Onda
• Velocidad de las Reacciones

Actividades

• Unidad de Circuitos (actividad para 3 sesiones)
• Circuitos en serie 2
• Explorando circuitos CD
• Conexión de resistencias en serie
• Hoja de Predicciones de una CDI - Circuitos Simples
• Guia de Laboartorio Círcuito en Serie
• Basic Electricity: short inquiry activities includes ideas for several sims
• Corrente e circuito elétrico
• Circuiti elettrici con resistori in serie e in parallelo
• Costruzione di circuiti in serie e in parallalelo, misura dell'intensità e tensione, scoperta di conduttori e insolanti.
• Asociacion de capacitores
• Introducción a Circuitos Eléctricos
• Serie de Labs virtuales de Ondas
• ¿Todo bien en casa?
• Batterijen in serie en parallel
• Laboratorio virtuale di circuiti
• Explorando variables de la electricidad
• Práctica con capacitores simulación en PhET
• Guia de trabajo - kit de construccion de circuitos: CD Laboratorio virtual
• RESISTENCIA ELÉCTRICA
• Attività sul circuito elettrico semplice
• Visualization and Visual Illusions SIM Homework
• sperimenta e rispondi
• Definiendo Funciones
• Energía Mecánica
• Battery-Resistor Circuit Simulation Homework III
• Battery-Resistor Circuit Simulation Homework II
• Battery-Resistor Circuit Simulation Homework
• Associação de equipamentos elétricos em série e em paralelo
• Explorando ondas en una cuerda
• Energía Mecánica en su sistema conservativo
• Electric Switches (Signal)
• Montagem Circuito DC - Lab Virtual
• Fuerzas en una rampa (actividad de indagación)
• construye una Molécula - Formulas moleculares y coeficientes
• Densidad, actividad con la simulación
• Juego de Aritmética (Basado en Indagación)
• Investigación básica en estequiometría
• Instalaciones eléctricas domiciliarias
• Circuiti in serie e in parallelo
• Ponte en onda con las ondas
• Circuitos eléctricos
• Visualizing Resistance
• Conociendo los genes patagónicos
• Reactivo en exceso y reactivo límite
• Guia de trabajo - Kit de Construcción de Circuitos: CD
• Compendio de Actividades e ILDs basadas en simulaciones PhET
• Equilibrio en el sube y baja
• U3S14L1 Circuitos eléctricos Phet
• Batteries, Resistance and Current
• Visualizing Current, Voltage and Resistance
• Fracciones Equivalentes
• Waves on a String (Inquiry Based)
• Moving Man (Inquiry Based)
• Prediction Sheet for Linear Motion
• Operaciones en Z a través de la recta numérica
• Clases Demostrativas Interactivas (ILD) de Movimiento Rectilíneo Uniforme
• Serie de actividades para Electrostática: de Electrización, Campos y Fuerzas
• Onderzoek de pH van vloeistoffen bij volumeverandering en verdunnen
• Energy Skate Park Clicker Questions (Inquiry Based)
• Wave demonstrations: water, sound, light (Inquiry Based)
• EM wave analogy tutorial
• Clase Demostrativa Interactiva (ILD) Movimiento Rectilíneo Uniformemente Acelerado (MRUA)
• Laptop opdracht 50 minuten
• Signal Circuit and DC Circuit Construction Kit Lab!
• El pendulo danzante
• Hoja de trabajo
• Energy Skate Park Basics
• Conservation of Energy 1: Introduction (qualitative approach)
• Energy Skate Park Basics: Mechanical Energy Lab
• Force and Motion activity 2: Relating graphs and free body diagrams using Moving Man and Forces 1D (Inquiry Based)
• Energy Skate Park Basics - Clicker Questions
• Espejos Esféricos
• Ley de Ohm y circuitos básicos
• PULSOS EN UNA DIMENSION
• Experimentando con la Ley de Ohm
• Verschil amplitude en frequentie
• Actividad: onda en una cuerda
• Kennismaken met bewegingsdiagrammen en versnelling
• Discovering Newton's Second Law
• 2D Motion
• Moving Man, elementary
• Moving Man: Pos and Vel Graphs
• Speed of a Wave NGSS aligned
• Waves on a String HTML5 PreAP Lesson
• Walker Lab with Moving Man sim
• Properties of a wave
• Investigating Properties of Transverse Waves
• Resistance in a Wire
• The Moving Man: Velocity
• Eating and Exercise Clicker Questions
• Resistance in a Wire Remote Lab
• Energy Skate Park-NGSS aligned HS
• Wave clicker questions (Inquiry Based)
• Preguntas conceptuales: Neurona
• Laboratório Virtual - Circuitos Elétricos
• Beta Decay Investigations
• Wave unit (Inquiry Based)
• How do PhET simulations fit in my middle school program?
• Energy, Forces, and Motion basics
• Inquiry Activity: Waves
• mechanical energy - exploring kinetic and potential energy
• Mechanical energy - Kinetic and Potential
• Kinetic and Potential energy
• Finding Properties of Energy (via the skate park)
• Potential and Kinetic Energy
• Energy Skate Park for Middle School(Inquiry Based)
• Sound and Wave Basics
• Energy Transformations
• Energy Skater -- Introduction to Mechanical Energy Conservation
• Simuler le fonctionnement d'un éclairage
• UNIDAD3 S14 L1 Medir voltajes
• Kracht en beweging
• Oefenen lenzenformule en construeren beeld
• Opdracht over Dichtheid
• ¿Cómo una disolución afecta los niveles de pH en ácidos y bases?
• "Química Interactiva: Dominando la Concentración de Soluciones en el Laboratorio Virtual PHET".
• Oplossing (Veren en massa's)
• Energy Forms Clicker Questions
• Energy Skate Park-NGSS aligned
• Energy Skate Park Basics Lesson
• Investigating Waves
• Conservation of Energy for Middle School
• Energy Skate Park Lab (html5)
• Models of Hydrogen Exploration
• Proporcionalidad en el Equilibrio Rotacional
• Actividad en Genially con la pista de patinaje
• CONSTRUÇÃO DE CIRCUITOS ELÉTRICOS UTILIZANDO O SIMULADOR PHET KIT DE CONSTRUÇÃO DE CIRCUITO (AC+DC)
• Atividades Investigativas - Ondas numa corda
• Inleiding constructieve en destructie interferentie bij transversale golven op een koord
• Jugando con Circuitos Eléctricos
• Waves & The Electromagnetic Spectrum
• UNIDAD3 S14 L4 Ley de Ohm Java
• Deduciendo la ley de Beer
• Soluciones químicas, concentración en molaridad
• Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based)
• Concept questions for Physics using PhET (Inquiry Based)
• Kracht en Beweging. Google Quizen
• Kracht en versnelling klas 3 vwo
• Plan de clases - Lanzamiento de proyectil
• Vergroting en verkleining
• Massa's en veren
• Moteur en PhET
• Roller Coaster Physics Investigation
• Energy skate park
• W, Ek en Ez, Energie vergelijkingen laten leven.
• UNIDAD3 S14 L4 Ley de Ohm
• MS and HS TEK to Sim Alignment
• Formación de imágenes en espejos y lentes
• Moving Man Simulation Activity
• Force-time graph activity
• Motion and Moving Man Simulation Homework
• Mapping of PhET and IBDP Physics
• Praktische opdracht breking en terugkaatsing Havo 4
• Energía en Acción: ¡Transforma y Sorpréndete !
• Momento y Colisiones en una dimensión
• Introducción a la igualdad en ecuaciones lineales
• Preguntas clicker sobre Concentración
• ESTUDIO Y OBSERVACIÓN DEL MOVIMIENTO DE UN PROYECTIL
• Krachten als oorzaak van versnelling en wetten van Newton
• Presión hidrostática por indagación
• practicum laboratory test "pendulum"/ practicum toets "slingeren"
• Introductie Lading, trui en ballon
• Variación de la Intensidad del Campo Eléctrico en la Bisectriz de un dipolo
• Introducción a Magnetismo
• Densidade
• Expresiones Algebraicas
• UNIDAD2 S7 L12 Energía mecánica en el péndulo
• Zekering gebruiken als beveiliging tegen Kortsluiting en overbelasting.
• Energjia kinetike dhe potenciale e trupit
• PREPARATORIA: Alineación de PhET con programas de la DGB México (2017)
• Lei de Ohm
• El ruido y la contaminación acústica en mi ciudad
• Opdrachten bij Reactanten, producten en resten
• Stroomsterkte voor en na een lampje
• Instructie en opdrachten (met antwoorden) zouten&oplosbaarheid
• Waves and sound(in dutch golven en trillingen)
• Estática en el balancín: Fuerzas y momentos
• Werkblad simulatie kracht en beweging klas 2
• Formación de Imágenes en un Espejo Cóncavo
• Puissance electrique
• Números de arriba y abajo en una fracción
• FREE Auto-Graded PhET Activities on Quizizz
• Energy Skate Park Learning Goals for four activities (Inquiry Based)
• Moving Man and Maze Game Simulations Homework
• Guia para trabajar Masa - Resorte con aplicación de gráficas en Excel
• Formas y cambios de energía
• Dispersión de la luz
• Expandiendo y Factorizando Expresiones Algebraicas
• Hojas de trabajo y preguntas sobre Energía
• Opladen door wrijving, influentie, geleiders en isolatoren - Google Quiz - guided inquiry
• Cruce y persecución de 2 móviles con movimiento rectilíneo y uniforme (MRU)
• Estados de la materia: Cambio en la estructura molecular del agua
• UNIDAD 1 S3 L1 MOVIMIENTO ONDULATORIO (ONDAS MECÁNICAS)
• Sumando y Restando Expresiones
• EXplosión de gas
• Qué factores afectan a la Solubilidad en las Soluciones
• Vamos a aprender a aplicar las operaciones en la recta numerica juntos
• Laboratorio virtual: exploremos los gases de efecto invernadero en diferentes escenarios
• Moving Man Activity
• Resistance and Resistivity
• Moving Man guided inquiry
• Comparing Forces on Different Planets
• Wave Motion
• Wave pre-lecture introduction for regular level
• Moving the Man
• Modeling: deriving "v =(wavelength)(f); et al.
• Moving Man
• Applications of Sinusoidal Functions
• Wave Exporation
• Forces in 1 Dimension
• Wave on a String Student Learning Guide
• Waves
• Moving Man Multiple Representations
• motion along straight line with constant speed
• Experiment to determine relationship between wavelength, frequency and speed
• Properties of a Wave Lab
• Oscillate Waves and Wavelengths
• Wave on a String Simulation
• Introduction to Forces in 1-D
• Sound Virtual Practical Activity
• Exploring Newton
• Net Forces and Newton's Second Law
• Moving Man Questions
• Investigating waves
• Moving Man Algebra uses
• Finding Wave Properties
• Finding the speed of a wave on a string
• (Lab Report
• Discovering Method to Determine The Speed of Wave on a String
• 2D Motion Activity
• Transverse Standing Waves Exploration
• Constant Acceleration Motion
• Wave on a string--the basics
• Waves Review
• Activity: Wave on a String
• Wave Refraction and Reflection
• Motion Labs using MOVING MAN
• Force introduction
• Resistivity Worksheet
• Types of Waves and its Parts
• Speed of a Mechanical Wave
• Moving Man
• Moving Man
• The "Lifelike" Moving Man: Variation in motion graphs
• Resistance in a Wire
• Measuring waves using wave on a string model
• Moving Man: Simple Acceleration
• Moving Man (Motion Intro)
• Student Guide for PhET - The Moving Man (JAVA) student guide
• Properties of Waves and Wave Speed
• Waves on a String Exploration Activity Guide
• Moving Man: Anayzing Graphs
• THE MOVING MAN: DISTANCE, DISPLACEMENT, SPEED & VELOCITY
• Discovering Newton's Second Law
• Moving Man Motion Graph Review
• Proving Newton's Second Law
• Moving Man I: Velocity vs. Time Graphs
• Moving Man II: Acceleration vs. Time
• Guided Discovery for Waves on a String
• motion along straight line with constant speed
• Wave on a String Comparison
• Modeling a linear simple harmonic oscillator
• Resistance of wire
• Energy waves digital lab
• Waves on a String AP1
• Wave Properties and Interactions Lab Manual
• Wave on a String Independent Student Learning Guide
• Wave Interference
• Lab- Wave Simulation
• Wave on a String, No End, Pre/In/Post-Class Worksheet
• Waves on a String
• Wave Basics for Middle Schoolers
• Standing Waves
• Simple trends in resistor structure
• Wave on a String
• Waves on a string
• Moving Man - Velocity vs. Time Graphs
• Exploring Newtons' Second Law
• Mr. (Moving Man)
• Properties of Waves - Lab Guide
• Waves on a string
• Speed of Wave Investigation
• Waves on a String
• Standing Waves Exploration
• Properties of waves
• Motion in Two Dimensions
• Motion Graphs
• Moving Man - Distance vs. Time Graphs
• Moving Man Simulation
• Get in Motion!
• Wave Investigation
• Video: Self-paced learning - Moving Man Simulation (Motion Graphs)
• Resistance and Resistivity
• Waves Virtual Lab Part 1
• Waves on a String Lab
• Waves on a String
• Moving Man with Position and Velocity graphs
• Constant Velocity & Uniform Acceleration with the Moving Man
• Force of Friction Graphing Ff=(mu)Fn
• Properties of Waves
• PHET The Moving Man Motion Graphing Model Activity
• 3-1 PhET LAB velocity time graphs
• Standing Waves Lab
• Waves on a String Discovery Activity
• De Resistencia y Ley de Ohm
• Intermolecular Forces and States of Matter - Interactive Lecture Demonstration
• Balloons and Static Electricity for Middle School
• Molecule Polarity- Inquiry and Applications
• Exploring Quantum Models of the Atom
• Natural Selection ILD
• Build a Molecule - Molecular Formulas and Coefficients
• Gases Understanding physical properties of gases (Inquiry Based)
• Exploring Bohr’s Model of the Atom
• Conservation of Energy 4 Energy Skate Park: Calculations with Conservation of Mechanical Energy using time graphs (Inquiry Based)
• Limiting Reactants
• Algebraic Expressions
• Understanding Natural Selection
• Exploring Natural Selection (9th Grade)
• Reactants, Products and Leftovers Activity 1: Intro to Chemical Reactions and Limiting Reactants
• Molecules and Light
• Acid Concentration and Strength Investigation
• Gene Machine: Lac Operon -an inquiry lesson
• Bohr's Model of the Hydrogen Atom
• Build an Atom: Introduction
• Waves Interference Remote Labs
• Conservation of Energy 2: graphs analysis
• Inquiry Based Modeling Static Electricity
• Slope Lesson and Activity Sheet
• A Projectile Motion-Introduction (Inquiry Based)
• Membrane Channels: inquiry into cellular diffusion
• Ramp Activity 1: Using free body diagrams for motion on an incline (Inquiry Based)
• Balancing Act Inquiry
• Pendulum Lab 1: Intro to pendulum (Inquiry Based)
• Waves Intro‌ Remote Lab ‌
• Charges and Fields Remote Lab Introduction to Static Electricity
• Induction (college homework version) (Inquiry Based)
• Induction (high school version) (Inquiry Based)
• Molarity: Quantitative Relationships
• Energy Skate Park - Concept Questions Compendium
• Balancing Chemical Equations - Guided Inquiry Activity
• Kinetic Molecular Theory- Introduction (inquiry-based)
• BendingLight_Remote_Lab
• Discovering Quantum “Coin” Behavior
• Circuit Construction Kit- series of three activitites (Inquiry Based)
• Density-introduction
• Discovering patterns of current and voltage in series and parallel circuits
• 3 Activities for Kepler's Laws of Planetary Motion
• pH Scale Basics Remote Lab1
• Exploring Gravity
• Density: How Does Density Relate to Mass &Volume and an Object's Interaction with Water?
• Sound_Inquiry for Middle School
• Resonance-Introduction to Natural Frequency
• Choral Counting
• Gravity and Orbits
• Magnets-Introduction (Inquiry Based)
• pH Scale inquiry-based intro to acid-base
• Reactions and Rates 1 Introduction to reactions (Inquiry Based)
• Color Vision Remote Lab
• Build an Atom - Inquiry-based basics (homework version)
• Build an Atom - Guided-Inquiry Activity
• Introduction to Circuits Remote Lab
• Concentration: Understanding Molarity
• Forces & Motion: Basics HTML5 - Part 2 (Friction)
• Gas Properties Gas Laws Quantitative
• Intermolecular Forces and Molecules - Interactive Lecture Demonstration
• Build an Atom
• Alpha Decay investigations
• Heat Flow
• Buoyancy: How Does Buoyant Force Act on Objects in a Fluid?
• Ladybug Motion 2D Vector controls for circle/elliptical motion (inquiry based)
• Calculus Grapher: Relating motion graphs to calculus graphs
• Resonance: Upper-division college
• The Meaning of pH
• Forces and Motion activity 1: Predicting speed and directions changes (Inquiry Based)
• Molecule Polarity - Guided Inquiry Activity
• Ladybug Revolution activity: Exploring rotational motion (Inquiry Based)
• How to make a laser
• How Strong is this Bond?
• Equation Grapher: Sketching Linear and Parabolic Graphs (Inquiry Based)
• Sugar and Salt Solutions: intro to bonding
• Ohm's Law Remote Lab
• Salts and Solubility 5: Designer Salts (Inquiry Based)
• Using the area model with expressions
• Conservation of Energy using Masses and Springs (Inquiry Based)
• Springs and Things
• Introduction to Static Electricity using Electric Field Hockey and Charges and Fields (Inquiry Based)
• Images from Convex Lenses (Inquiry Based)
• Maze Game 2: Vector controls for circular motion (Inquiry Based)
• Investigating Climate Change at the Macroscopic and Microscopic Level
• Adding and Subtracting Expressions
• Exploring Arrays
• What are the chances?
• Sugar and Salt Solutions - Annotated Lecture Slides
• Molecule Shapes - Guided-Inquiry Activity
• Fluid Pressure - an inquiry introduction
• Properties of representations of linear functions
• Concentration - Clicker Questions
• Plate Tectonics Inquiry
• Sugar and Salt Solutions: Exploring Common Substances Using a PhET Simulation
• Waves: Superposition (Inquiry Based)
• Reactions and Rates 2: Intro to Kinetics (inquiry based)
• Coulomb Law Remote Lab
• Balancing Act Remote Lab
• Conservation of Energy using Masses and Springs (homework version) (Inquiry Based)
• Strong and Weak Acids
• Collision Lab : Introduction to One Dimension collisions
• Exploring Data to Make Predictions
• Kinetic Molecular theory review
• Acid Base Solutions: Concentration and Strength
• Forces and Motion: Finding the Mass of a Car
• Radioactive Dating Game inquiry
• Invention Lab_Wave Interference
• Balancing Chemical Equations - Inquiry based Introduction
• Nuclear Fission Inquiry
• Investigation of a Solution’s Color (Qualitative and Quantitative) - Guided Inquiry Activity
• Wave Modeling and Wave addition (Inquiry Based)
• Circuit Activity 2 Series & Parallel Circuits (Inquiry Based)
• Forces and Motion: Balanced and Unbalanced Forces, and Predicting Changes in Motion (Inquiry Based)
• Apples in Baskets - Decomposition of 2 addends
• Vector Addition 2: Understanding Force equilibrium (Inquiry Based)
• Stern Gerlach clicker questions
• Modeling Friction (Inquiry Based)
• Reactions and Rates 3: Introduction to Equilibrium (Inquiry Based)
• Maze game: 2 activities in pdf (Inquiry Based)
• States of Matter (Inquiry based) Phase Change and Phase diagrams
• Introduction to Discharge Lamps
• Molecule Polarity - Clicker Questions
• Making Meaning of Improper Fractions and Mixed Numbers
• Reactions and Rates College version for tab 3- kinetics (Inquiry Based)
• Identifying the Limiting Reactant
• Balloons and Bouyancy: An Introduction to Bouyancy - (Inquiry Based)
• What Factors Influence the Rate of a Reaction?
• Entropy, Microstates, and Probability - Interactive Lecture Demonstration Guide
• Greenhouse gases - sense making by observing photons
• Vector Addition 1: Introduction to vector math (Inquiry Based)
• Trig Tour - Seeing Patterns in a Unit Circle
• Beer's Law Lab - Guided Inquiry Activity
• Choral counting
• Radioactive Decay
• Reactants, Products, and Leftovers Activity 2: Limiting Reactants in Chemical Reactions
• Ramp Activity 2: Calculating Net force on an incline (Inquiry Based)
• Using PhET in High School Chemistry- all my activities in pdf
• States of Matter Basics - Clicker Questions
• Graphing Quadratics
• Concept Questions for Chemistry using PhET
• Salts and Solubility 2: Solubility (Inquiry Based)
• Capacitor_Lab_Basics _html_Remote_lab
• Electrolyte and Non-electrolyte Solutions - Interactive Lecture Demonstration
• Build an Molecule - concept questions
• Isotopes & Atomic Mass-Inquiry Activity
• Investigation of a Solution’s Color (Qualitative) - Guided Inquiry Activity
• Build an Atom - Clicker Questions
• Capacitor Lab: Inquiry into Capacitor Design
• Neuron - an inquiry lesson idea
• Intro to Photoelectric Effect Interactive Lecture
• Fraction Matcher Game
• Gas Properties Modular Homework Activity
• Balancing Chemical Equations - Clicker Questions
• PhET Collision Lab
• Salts and Solubility 1: introduction to salts (Inquiry Based)
• States of Matter Lecture Demonstration
• Balancing Chemical Equations -ILD
• Saturated Solutions - Interactive Lecture Demonstration
• Concentration - Interactive Lecture Demonstration
• Understanding the Photoelectric Effect
• Sound: An Introduction (Inquiry Based)
• Reactants, Products, and Leftovers Review Activity: Limiting Reactants in Chemical Reactions Review
• Using PhET in Electricity Unit
• MRI lecture and homework
• Maze Game 1: Using vector representations to move through a maze (Inquiry Based)
• Salts and Solubility 4: Using Q and LeChateliers Principle
• Using Ratios and Rates to Solve Problems
• Beer's Law Warm-Up
• Reactants, Products, and Leftovers Concept Questions
• Fourier Making Waves Game (Inquiry Based)
• Circuit activity 3 Combination Circuits using CCK only (Inquiry Based)
• My mystery number
• Salts and Solubility Concept Questions for 5 activitites (Inquiry Based)
• Reflection and Transmission Interactive Lecture
• Molecules and Light-inquiry for high school
• Slope-Intercept Lesson and Activity Sheet
• Mixing paint with ratios
• Davisson Germer lecture and homework
• Addition strategies within 10 (or 20)
• Gravity and Orbits-Vector Concept
• Electric Energy and Capacitance demonstrations (Inquiry Based)
• Curve Fitting: How well does the curve describe the data? (Inquiry Based)
• Investigating Molecule Shapes
• How Will This Isotope Decay?
• Friction demonstration
• Solutions Unit Sample
• Build an Atom Game Remote Lab
• Diffusion ILD
• Circuit activity 3 Combination Circuits (Inquiry Based)
• Organize it!
• Family of Mr. 10
• Subtraction stories
• What is greater and less?
• Molecule Polarity
• Ten and how many more?
• Reactions and Rates 4 lessons (Inquiry Based)
• What is a Fraction?
• Applying Le Chatelier's Principle
• Comparing Unit Rates
• Comparing numbers using a vertical number line
• Pendulum Lab 2: Find g (Inquiry Based)
• Count and Compare
• Displaying, Analyzing, and Summarizing Data
• Gravity Lab- intro
• Molecule Shapes - Clicker Questions
• Maxwell-Boltzmann Distribution Curves
• Interpreting Chemical Symbols
• Salts and Solubility 3: Solution Equilibrium and Ksp (Inquiry Based)
• Finding and Using Unit Rates
• Isotopes and Atomic Mass - Guided Inquiry Activity
• Generating Equivalent Expressions
• Mean as Balancing Point
• Comparing Ratios
• Wave Particle Duality
• Exploring Radioactive Decay and Its Uses
• Build an Molecule - Inquiry-based basics
• Defining Functions
• Molecule Shapes- inquiry
• Reactions and Rates 4: Equilibrium LeChatlier
• Patterns and Ratios
• Conductivity: an inquiry activity (also uses other sims)
• True or False? Kindergarten
• Drag and count
• Electric Field Hockey Simulation Homework
• Arithmetic Games (Inquiry Based)
• Ramp Middle School Inquiry
• Apples in 3 Baskets
• Isotopes and Atomic Mass - Clicker Questions
• True or False? 1st grade
• Circuit activity 2 Series and Parallel Circuits using only CCK (Inquiry Based)
• Shape, Center, and Spread
• Static Magnetic and Electric unit (Inquiry Based)
• Probability and Randomness Interactive Lecture
• Radioactive Decay - ILD
• Scaling Shapes Activity and Lesson
• Sugar and Salt Solutions - Clicker Questions
• Point-Slope Lesson and Activity Sheet
• Exploring Slope and Speed
• Describing Location and Movement
• Slope and Speed (revised)
• Grocery Comparisons
• Salts and Solubility 5 Activities in pdf
• Exploring MAD
• Introduction to Median
• Exploring Boxplots and IQR
• Expanding and Factoring Algebraic Expressions
• Trig Tour - Connecting the Unit Circle to the Graph
• Trig Tour - Using Reference Angles with a Unit Circle
• Wave Representations (Inquiry Based)
• Circuit 1 Properties of Electric Circuits (Inquiry Based)
• Gravity Force Lab : calculations
• Gas Properties-Inquiry Middle School
• Potential Difference in Circuits
• DC circuits lab with real equipment and CCK
• Balloons and Buoyancy : How do gases in different containers behave in gases fluids?
• APRENDAMOS SOBRE LAS MOLÉCULAS QUE INTERVIENEN EN LA EXPRESIÓN GÉNICA A TRAVÉS DEL USO DE UN SIMULADOR PhET
• Explorando la genética Mendeliana
• Explorando la selección natural (9º grado)
• JUGANDO CON LOS NÙMEROS
• Comparando expresiones equivalentes
• Explicando la selección natural (2º grado)
• Punto - Pendiente Lección y Hoja de Actividades
• Cinética química. Preguntas conceptuales.
• ¡QUE LA FUERZA TE ACOMPAÑE!
• UNIDAD1 S3 L1 MOVIMIENTO ONDULATORIO-EL PÉNDULO
• Reflection and Interference of Waves
• Velocidad de propagación de una onda
• Física del Caos
• Električna struja osmi razred
• LABORATORIO VIRTUALE SULLA LEGGE DI OHM
• Preguntas desafiantes sobre el segundo principio de Newton
• Energy Skate Park Worksheet
• Energy Skate Park
• Inquiry to the Energy Skate Park
• PhET Energy Sk8r sim Activity
• NRG Sk8r
• Energy Simulation
• Introduction to Energy Model
• Introduction to rotational motion
• Conservation of Mechanical Energy
• skate park
• Energy Skate Park
• Resistance and Ohm's Law Investigation
• Energy Skate Park
• Unusual cases of oscillation
• Energy Skate Park Basics Energy Exploration
• conservation of mechanical energy
• Energy Skate Park: Basics Lab
• Graphing Energy at the Skate Park
• Conservation of Energy Exploration with Skatepark Physics
• Conservation of Energy - conceptual
• conservation of mechanical energy
• Conservation of Energy (Energy Skate Park)
• Build a Park
• Energy Skate Park
• Skate Park and Energy Conservation
• Energy Skate Park Lesson
• Waves on a String and Wave Interference Virtual Labs
• Energy Skatepark Adventures
• Kinetic, Potential and Total Energy: Claim, Evidence, Reasoning
• Conservation of Mechanical Energy (Lab Report)
• Conservative and non-conservative forces
• Conservation Of Mechanical Energy
• Conservation of Mechanical Energy
• Energy Park
• Conservation of Mechanical Energy
• tutorial energy-skate-park
• Energy Skate Park Basics Student Guide [HTML]
• Guided Discovery (Chinese/English) for Freshman University Physics: 6. Wave Interference
• Resistance in a Wire
• Energy Skate Park Formal Lab
• Conservation Of Mechanical Energy
• Conservation of Mechanical Energy
• Galileo's Skater Down an Inclined Plan
• Guided Discovery (Chinese/English) for Freshman University Physics: 5. Introduction to Waves
• Energy skate park
• PhET Energy Skate park
• Conservation of mechanical energy.
• CONSERVATION OF MECHANICAL ENERGY
• Energy Skate Park - investigation
• Energy Skatepark!
• Intro to Energy Conservation
• conservation of mechanical energy
• Energy Skate Park: Basics
• PHETman
• Lab Experiment
• Conservation of Energy
• Conversation of Mechenical Energy
• Energy Skate Park Student Simulation
• Forces in 1 and 2 Dimensions
• Energy Skate Park: Basics
• Thermodynamics of Skating
• Rotational Motion
• Energy Simulation Lab - Skate Park
• Ohm's Law and Resistance Virtual Lab
• GUÍA PRACTICA “MUTACIONES EN LOS SERES VIVOS” PARA IMPLEMENTAR EL USO DE SIMULADORES PhET
• Reacciones químicas y balanceo de ecuaciones
• Hoja de Actividades de Ciencias: Soluciones Ácido Base
• Conservation of mechanical energy
• Atividade Energia Mecânica gamificada
• Skate Park Phet- Science 8 and ACC Science 8
• Energy Skate Park Lab
• Conservation of Mechanical Energy
• Disoluciones
• NUMEROS MIXTOS PLAN DE CLASE Y HOJA DE TRABAJO
• Escala de pH, introducción a ácidos y bases con indagación
• Pendiente-Intersección Lección y Hoja de Actividades
• Mis Primeros Numeros
• ¿Qué tanto ocupo?
• SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017)
• SKATER y Conservación de la Energía
• Concentración
• Conductividad Eléctrica - Soluciones
• La torre del aprendizaje-Igualdades
• PRACTICAS DE SIMULACIONES
• CDI-Hoja de Predicciones para Desintegración Radioactiva
• Tiros de banco
• Energiebehoud in het skatepark klas 5
• Energy skate park
• Guided Discovery (Chinese/English) for Freshman University Physics: 2. Newtonian Mechanics
• Force and Motion
• Hydrogen Emission Spectrum
• Phet Skate Park Inquiry Lab and Graphical Modelling Activity
• 1 Dimensional Motion - Kinematics and Graphing
• Ispitivanje ovisnosti brzine vala na žici pomoću Phet simulacije
• 줄의 피동 SIM 사용지침서
• Demonstartion of waves on a string
• Actividad de MRU usando el Hombre Móvil
• Hombre móvil. MRU y MRUA.
• Simulation
• Movimento Uniforme e Uniformemente Variado
• Rezistorun Strukturu
• Measurement of wave parameters
• Resistência de um fio condutor
• Resistance of wire
• חקר כוח חיכוך
• Higidura zuzen uniformea
• Brzina vala
• H έννοια της επιτάχυνσης στην ευθύγραμμη ομαλά μεταβαλλόμενη κίνηση
• Siimulação PhET_Guia de Exploração_Onda numa corda
• Atividade experimental: Visualização e estudo de movimentos retilíneos uniformes
• การทดลองที่ 6 คลื่นในเส้นเชือก
• INTRODUÇÃO A CINEMÁTICA
• 2ª Lei de Ohm no "Resistance in a Wire (HTML5)"
• Velocidade do Pulso de Onda no "Wave on a String (HTML5)"
• SEGUNDA LEI DE OHM
• Laboratorio de ondas
• comment_se_propage_une_onde
• Stehende Wellen mit der Simulation Seilwelle erforschen
• UNIDAD1 S2 L3 La velocidad y la rapidez-EL HOMBRE MÓVIL
• Ondas Mecânicas (em corda) no "Wave on a String (HTML5)"
• Função Horaria da Posição e Velocidade
• Percobaan gelombang pada tali
• Hoja de predicciones
• Atividade: Vales, Cristas e Ciclos
• Ondas
• Ondas Estacionáarias em cordas
• Explorando el pH de las sustancias
• Greenhouse Gas Lab
• Photoelectric Effect (PreAP)
• Equation Grapher: Stretch Armstrong
• Models of Atom
• Exploring Mendelian genetics
• Reaction Rates
• Exploring Converging Lenses
• Phet Nuclear Fission Simulation Lab
• Factors Affecting Average Global Temperature
• Parabolas on the Move!
• Molecules Are Made Up of Atoms
• Quadratic Transformations (Vertex form)
• Photoelectric Effect (AP)
• Movement of substances across a semi-permeable membrane
• Exploring Light - Colors and Filters
• Collision Lab Basics
• States of Matter
• Online Quiz for Build An Atom
• How Many Apples?
• Density Simulation
• Bunny Blitz
• Circuit inquiry for Middle school
• Exploring Circuits
• Gravity and Orbits Investigation
• Faraday’s Electromagnetic Lab
• Geometric figures
• Physical vs Chemical Change 8th grade
• Water Waves in an Electric Sink
• Modeling Universal Gravitation Activity
• Balancing Equations
• States of Matter PhET
• Estimating the Length of Everyday Objects (Inquiry Based)
• Math in Motion
• Math in Motion - Tasks
• Balancing Act Homework Activity 1 and 2
• Exploring magnets, pickup coils and generators
• PhET Plate Tectonics
• Designing Experiments Using Masses & Springs
• Calculating Concentration
• Acid-Base Macro Particulate Symbolic
• Phases of Matter
• Bank Shots
• An investigation into Building Electric Circuits (Inquiry Based)
• Experimental Design: Projectile Motion!
• Swinging Physics Using Pendulum Phet
• Projectile investigation for Middle School
• Waves Intro | Remote Lab
• Exploring the pH of substances
• Natural Selection Lesson by UTeach
• Circuits 3 Day Unit
• Chemistry Theater
• Eating and Exercise Activity
• States of Matter
• Exploring Average Atomic Mass
• Ladybug Motion in 3rd Grade
• PhET LAB Alpha (IB 7.2)
• Molecular Geometry Flash Cards
• Series and Parallel circuits basics
• Thermal Energy Scientific Inquiry
• numbers game
• Investigating Electromagnetism Applications
• It is not a change... it is a crisis
• Exploring How Light Behaves at Boundaries
• Fields - NGSS Aligned
• Energy Forms and Changes Simulation
• Hooke's Law (Hands-on & PhET)
• Gas Investigation for Middle School
• What is an atom?
• Building Fraction Sense Using “Fractions Intro PhET Simulation”
• Ramp lab
• Introduction to Inequalities
• Molecule Polarity
• Calculus Grapher for Math (Pre-Calculus or Calculus)
• Forces and Motion Lesson
• Mapping Electric Fields
• Exploring pH & Its Variations Through Water Dilution (for visually impaired students)
• Air Resistance Lesson
• Glaciers Earth Science
• Gravity Force Worksheet
• Refraction Investigation
• Exploring integers
• Rutherford Scattring Simulation
• The Maze Game
• Quadratic Functions for Projectile Motion
• Comparing Equivalent Expressions
• Gas Laws Exploration
• Relative Density - sink or float
• pH Scale
• Exploring Equilibrium
• Balancing Chemical Equations HTML5
• Temperature and Energy NGSS aligned
• Equivalent Expression Exploration
• Exploring Electric Potential, Electric Field and Distance Relationships
• Energy Skate Park Basics | Remote Lab
• Solving Multi-Step Equations
• Day 2: Exploring Kinds of Circuits (Series/Parallel)
• Inquiry Equilibrium activity
• Investigating Data Sets and Intro to Bootstrapping using PhET embedded in CODAP
• Balancing Act
• Investigating the Greenhouse Effect
• Structure of the Atom
• Forces and Motion
• Colors, Bunnies and Wolves: does the strongest survive?
• Paint Splat: Comparing Ratios
• Molecules and Light - Guided Inquiry Activity
• Wave Interference with Water Waves (AP)
• Parallel Circuit Electrical Relationships
• Intro to Series and Parallel Circuits
• Atomic Marco Polo
• Arithmetic (Multiply)
• Balancing Chemical Equations
• Density Exploration
• Gravity Force Investigation (AP)
• Exploring parallel and perpendicular lines
• Heat it Up
• Lesson Plan for Teaching Shapes of Molecule
• Kinematic Equation Activity
• Testing Predictions for Projectile Motion
• Day 1: Lighting a Bulb
• Estimation Game
• Circuit design challenge
• Function Fun
• Natural Selection Lab
• Light Behaves Like a Wave (sometimes...)
• Ramp: Forces and Motion Investigation
• Blackbody Radiation and Wien's Law
• Gravity Force Investigation (PreAP)
• Forces and Motion: Tug O' War
• Rules for Forces
• Building Ions PhET Lab Exploration
• Gravity Force Lab PreAP using HTML5 Sim
• Plate Tectonics
• Electric Field Lab
• Fraction Matcher Scaffolding Lesson
• isotopes and atomic mass
• Using Transformations to Graph in Slope-Intercept Form
• Balloons and Static Electricity
• Introduction to Electrostatics
• Pre-Assessment for elevating data intuition, working towards data fluency
• Reacciones químicas
• Balance in the up-and-down
• Exploring (proportional) Density
• statistical parameters
• Grocery Shopping
• Probability Plinko
• Quadratic Projectiles
• Variables that Affect Gravity
• FLOATING AND SINKING OBJECTS
• States of Matter for Middle School
• Bending Light Exploration Lab
• Funky Functions
• Introduction to vectors
• lac Operon Simulation
• Fractions Tops and Bottoms
• Gravity and Orbits Lesson
• Build an Atom
• Circuit Lab 2 - Series and Parallel Circuits
• Area Model Decimals - Grade 6
• Density Lesson (with Putty Lab)
• The Atom; Discovery of the Atom
• Flow stretching and DNA extension
• Water Polarity and Purification
• Natural Selection Activity
• Testing Ideas from Classical and Quantum Physics
• Electrical Charge Lab
• Equilibrium Inquiry and Experiment Activity
• Gas Laws
• Similar Triangles and Slope
• E/M Waves
• Day 3: Conductors and Insulators
• Build an Atom
• Describing Functions
• Comparing Functions: Function Sleuthing to Find Rules
• Graphing Activity using Gas Properties Simulation
• The physics of the triple jump
• Exploring Equivalence with Rational Numbers: Part 1 Fractions less than or equal to 1
• Exploring Equivalence with Rational Numbers: Part 2 Extending to Mixed Numbers
• Capacitor Design Remote Lab
• Exploring fractions
• Experimental Design with Forces
• Introduction to Oscillations
• Introduction to energy- a chemical context
• Hot Air Balloons Lesson
• Like Terms and How to Combine Them
• PhET Collisions
• Circuit Construction Kit (DC Only), Virtual Lab
• What is an atom?
• Boiling, Freezing, and Melting Points
• PhET - Explore Absolute Value on the Number Line Distance Activity
• Go the Distance!
• Working with Fractions
• Types of Forces Investigation
• Exploring Factoring as Undoing the Distributive Property
• Chaos Physics
• Bending Light -Refraction and Reflections
• RGB Color
• Balloons and Static Electricity | Remote Lab
• Energy Chains
• Fractions 3 Day Unit
• Maze Game- A Velocity & Acceleration Comparison
• Understanding Line of best fit and Correlation Coefficient
• Nuclear Processes
• Making Sense of Slope
• Solar System NGSS aligned
• pH Scale Basics | Remote Lab
• Electromagnetic Induction
• Density and Buoyancy
• Undergrad MRI Workshop Activity
• Factors affecting the period of a simple pendulum
• Ph12 Lab 5F
• Arithmetic mean with PhET and GeoGebra
• Is Natural Selection Fur-real?
• Equivalent Fractions Day 3 of 3
• What is Equality
• What is a Fraction? Day 1 of 3
• Comparing and Ordering Fractins Day 2 of 3
• Investigating Density, Volume, Mass and Weight
• THE ATOMIC STRUCTURE LESSON PLAN
• How Can You Light A Bulb?
• PhET LAB Beta (IB 7.2)
• Electromagnetic Induction
• Linear Equations in Slope-Intercept and Point-Slope Form using “Graphing Lines PhET Simulation”
• Electric Field Hockey Using Coulomb's Law
• Kinetics Guided Inquiry
• Rutherford Scattering
• Lesson plan
• Investigation of sugar and salt solutions
• Atomic Addition
• Pendulum investigation for Middle School
• Moving Molecules
• Beaded Factors
• States of Matter Compare Matrix
• How Does Dilution Affect pH Levels of Acids and Bases?
• Making Green Paint
• Exploring Solving Systems of Linear Equations
• Wave Interference (PreAP)
• Exploring Changes in States of Matter
• Exploring Equilibrium 2 (Le Chatelier's Principle)
• Flow stretching and molecular motors
• Introduction to Magnetic Fields (bar magnets and electromagnets) - Inquiry Based
• Energy Forms and Changes PhET Lab
• NGSS Alignment Doc for Middle School targeted PhET Sims
• Laboratorio de Colisiones
• Introducción a los estados de la materia
• Explorando la gravedad y los péndulos
• Flotación de los cuerpos
• Indagación con la clase entera: Ley de Beer & Lambert
• Plan de Clase Datación Radioactiva ☢
• Reconociendo los estados de agregación
• La legge di Hooke
• Explorando el movimiento parabólico
• Cuadernillo PhET La materia y sus interacciones 2023
• Energía potencial elástica, fuerzas y ley de Hooke
• Introducción a las colisiones
• Ácidos y bases: ¿fuertes o débiles?
• Pendiente Lección y Hoja de Actividades
• Formulas y nombres de moléculas
• No es un cambio... es una crisis
• Radiación térmica
• Comportamiento de la luz: ¿Qué le pasa a la luz cuando ¿pasa? de un material a otro?
• Artistas mediterráneas
• Jugamos con las proporciones
• Reacciones reversibles
• Ley de Masa
• La función misteriosa
• Una torta de jamón con fracciones
• Guided Discovery (Chinese/English) for Freshman University Physics: 3. Energy & Momentum
• Kinetic and Potential Energy
• PHET Digtial Wave Lab
• Verification of Ohm's Law
• Qualitative Introduction to Energy
• FRICTION_FORCES_in_1_dimension
• Alignment of PhET sims with NGSS
• Guided Discovery (Chinese/English) for Freshman University Physics: 1. Kinematics
• Preguntas de razonamiento para todas las simulaciones HTML5
• Kinematics
• PhET Sims Aligned to the Chemistry Curriculum
• Explorando líneas paralelas y perpendiculares
• Descubriendo la condición de equilibrio rotacional
• La ecuación del aumento da la lente delgada
• həndəsi optika
• MADDƏNİN AQREQAT HALLARI
• Kəsrlər Giriş
• Kəsrin Surəti və Məxrəci
• Furye sıraları-Dalğa yaratmaq
• Kimyəvi tənliklərin balanslaşdırılması
• Om qanunu
• Recta numérica: Distancia absoluta y directa.
• Huk Qanunu onlayn laboratoriyası
• Investigación del color de una solución (cualitativa y cuantitativa) - Actividad de indagación guiada
• Kəsri Yaratmaq
• İstixana Effekti
• Atomic
• Compra de Comestibles
• Conservación de la masa: ¡El Desafío de las Ecuaciones-sonrientes!
• Rectas paralelas