1.158 Zoekresultaten die overeenkomen met capacitores en paralelo
Simulaties
- Afgeleiden en Integralen tekenen
- Aggregatietoestanden (HTML5)
- Alfaverval
- Algebra van oppervlakte (HTML5)
- Interacties tussen atomen (HTML5)
- Ballonnen en opwaartse kracht
- Ballonnen en statische elektriciteit (HTML5)
- Ballonnen en statische elektriciteit
- Betaverval
- Beweging in een vlak
- Botsing Lab (HTML5)
- Bouw een atoom (HTML5)
- Bouw een molecule (HTML5)
- Boventonen
- Breuken: gelijkheid (HTML5)
- Breuken: gemengde getallen (HTML5)
- Kies je breuk (HTML5)
- Ladingen en velden (HTML5)
- Circuit bouwdoos wisselstroom - Virtueel lab (HTML5)
- Circuit constructiedoos: gelijkstroom (HTML5)
- Circuit Constructiedoos: Wisselstroom (HTML5)
- Concentratie (HTML5)
- Condensator Lab
- Condensator lab: eenvoudig (HTML5)
- Covalente bindingen (dubbele potentiaalputten)
- Davisson-Germer: diffractie van elektronen
- Aggregatietoestanden: eenvoudig (HTML5)
- De wet van Coulomb (HTML5)
- De wet van Faraday (HTML5)
- Dichtheid (HTML5)
- Diffusie (HTML5)
- DNA strekken
- Doolhofspel
- Drijven
- Een oppervlakte bouwen (HTML5)
- Eigenschappen van gassen (HTML5)
- Elektrischveldhockey
- Elveld
- Energie schaatspark (HTML5)
- Energie in het schaatspark: eenvoudig (HTML5)
- Eten en bewegen
- Faraday's Elektromagnetisch Lab
- Fitting van kromme (HTML5)
- Forces and Motion
- Fotoelektrisch effect
- Fourier: Golven maken (HTML5)
- Functie Bouwer (HTML5)
- Functiebouwer: eenvoudig (HTML5)
- Galtonbord - waarschijnlijkheid (HTML5)
- Geleidingsvermogen
- Geluidsgolven
- Generator
- Geometrische optiek (HTML5)
- Getallijn: Bewerkingen (HTML5)
- Getallijn: gehele getallen (HTML5)
- Gletsjers
- Golf op een koord (HTML5)
- Rechten tekenen (HTML5)
- Grafieken van vergelijkingen tekenen
- Gravitatiekracht lab (HTML5)
- Gravitatiekracht lab: eenvoudig (HTML5)
- Halfgeleiders
- Het bewegende mannetje
- Het broeikaseffect
- Circuit constructiedoos: gelijkstroom - Virtueel lab (HTML5)
- Breuken: inleiding (HTML5)
- Inleiding gassen (HTML5)
- Inleiding golven (HTML5)
- Interferentie van golven (HTML5)
- Isotopen en atoommassa (HTML5)
- John Travolta(ge) (HTML5)
- Kernsplitsing
- Kleinste kwadraten regressie (HTML5)
- Kleuren zien (HTML5)
- Koppel
- Kracht en beweging: eenvoudig (HTML5)
- Krachten langs een lijn
- Krachten op een helling
- Kwadratische grafieken (HTML5)
- Kwantum golfinterferentie
- Kwantumtunnelling en Golfdeeltjes
- Lasers
- Lichtbreking (HTML5)
- Lieveheersbeestje-draaien
- Maak een breuk (HTML5)
- Maak een tien (HTML5)
- Maanlander
- Magnet and Compass
- Magnetrons
- Magnets and Electromagnets
- Massa’s en veren (HTML5)
- Massa’s en veren: eenvoudig (HTML5)
- mass-spring-lab
- Mijn zonnestelsel (HTML5)
- Modellen van een waterstofatoom
- Molariteit (HTML5)
- Moleculaire motors
- Moleculen en licht (HTML5)
- Natuurlijke selektie (HTML5)
- Neonverlichting en andere ontladingslampen
- Neuron (HTML5)
- Omkeerbare reacties
- Onder druk (HTML5)
- Ontdek gelijkheid (HTML5)
- Ontdek gelijkheid: eenvoudig (HTML5)
- Ontdek gelijkheid: twee veranderlijken (HTML5)
- Onzelieveheersbeestjekruipt tweedimensionaal
- Oppervlakte model decimalen (HTML5)
- Oppervlakte model inleiding (HTML5)
- Oppervlakte model vermenigvuldiging (HTML5)
- Optellen van vectoren (HTML5)
- Optellen van vectoren: vergelijkingen (HTML5)
- Optisch manipuleren van lichtpulsen
- Optisch pincet
- Slinger lab (HTML5)
- pH schaal (HTML5)
- Platentektoniek
- Polariteit van moleculen (HTML5)
- polariteit molecuul
- Prijs per stuk (HTML5)
- Projectielbeweging (HTML5)
- Quantum bindingstoestanden
- Radiating Charge
- Radioactief bepalen van de ouderdom
- Radiogolven
- Ramp: Forces and Motion
- Reactanten, producten en resten (HTML5)
- Reacties en reactiesnelheid
- Reactievergelijkingen doen kloppen (HTML5)
- Rekenen (HTML5)
- Resonantie
- Rutherfordverstrooiing (HTML5)
- Schakelling met batterij en weerstand
- Schatting
- Soorten en veranderingen van energie (HTML5)
- Spanning batterij
- Spectrum zwarte straler (HTML5)
- Spelen met verhoudingen (HTML5)
- stern-gerlach
- Stroomkirng
- Suiker- en zoutoplossingen
- Tekenen van helling-interval (HTML5)
- Travolta - statische elektriciteit
- Trigonometrie toer (HTML5)
- Uitdrukkingen omwisselen (HTML5)
- Vereenvoudigd MRI
- Verhouding en Breuk (HTML5)
- Vloeistofdruk en stroming
- Vormen van moleculen (HTML5)
- Wat je moet weten over uitdrukkingen van genen (HTML5)
- Weerstand van een draad (HTML5)
- Wet van Beer lab (HTML5)
- Wet van Hooke (HTML5)
- Wet van Ohm (HTML5)
- Wrijving (HTML5)
- Zouten en Oplosbaarheid
- Oplossingen van zuren en basen (HTML5)
- Gravitatie en banen (HTML5)
Activiteiten
- Asociacion de capacitores
- Práctica con capacitores simulación en PhET
- Unidad de Circuitos (actividad para 3 sesiones)
- CONSTRUCCIÓN DE CIRCUITOS EN PARALELO
- Explorando circuitos CD
- Estudio de los circuitos en serie y paralelo
- Resolución circuitos en serie y paralelo
- Laboratorio de Capacitores
- Laboratorio de capacitores con y sin dieléctrico.
- Introducción a Circuitos Eléctricos
- Taller y laboratorio capacitores
- Laboratorio virtual de Condensadores
- Laboratório Virtual - Circuitos Elétricos
- Bailando al son de las razones
- Associação de equipamentos elétricos em série e em paralelo
- La torre del aprendizaje-Igualdades
- Artistas mediterráneas
- La función misteriosa
- Una torta de jamón con fracciones
- Recta numérica: Distancia absoluta y directa.
- Conexión de resistencias en serie
- El tianguis de las razones unitarias
- Simulaciones PhET para aprendizaje de matemáticas-área
- Capacitores no OA "Capacitores Lab: Basics (HTML5)"
- Associação de Resistores (Paralelo) no "Circuit Construction Kit: DC (HTML5)"
- Matemáticas futboleras ¿y la mediana?
- Hoja de Predicciones de una CDI - Circuitos Simples
- Fuerzas en una rampa (actividad de indagación)
- Reactivo en exceso y reactivo límite
- Laboratorio Virtual de Capacitancia basado en las propuestas del A.A.F.
- Juego de Aritmética (Basado en Indagación)
- Associação de componentes elétricos em série e paralelo
- Eating and Exercise Clicker Questions
- Ponte en onda con las ondas
- U3S14L1 Circuitos eléctricos Phet
- CONSTRUCCIÓN DE CIRCUITOS EN SERIE
- Energía Mecánica en su sistema conservativo
- Compendio de Actividades e ILDs basadas en simulaciones PhET
- Hoja de trabajo
- Equilibrio en el sube y baja
- CAPACITOR DE PLACAS PARALELAS - EXPERIMENTO VIRTUAL
- explorando ondas en una cuerda
- Operaciones en Z a través de la recta numérica
- Onderzoek de pH van vloeistoffen bij volumeverandering en verdunnen
- Laboratorio Virtual basado en el Aprendizaje Activo de la Física para abordar la Ley de Ohm y la Resistencia en un elemento conductor
- Isotopes and Atomic Mass - Clicker Questions
- Isotopes and Atomic Mass - Guided Inquiry Activity
- Salts and Solubility 5 Activities in pdf
- Gravity and Orbits
- Gravity and Orbits-Vector Concept
- Isotopes & Atomic Mass-Inquiry Activity
- Sugar and Salt Solutions - Annotated Lecture Slides
- Electrolyte and Non-electrolyte Solutions - Interactive Lecture Demonstration
- Sugar and Salt Solutions - Clicker Questions
- Reflection and Transmission Interactive Lecture
- Molecules and Light
- Sugar and Salt Solutions: Exploring Common Substances Using a PhET Simulation
- Salts and Solubility 5: Designer Salts (Inquiry Based)
- Salts and Solubility 2: Solubility (Inquiry Based)
- Reactions and Rates 3: Introduction to Equilibrium (Inquiry Based)
- Reactions and Rates 4 lessons (Inquiry Based)
- Salts and Solubility 4: Using Q and LeChateliers Principle
- Salts and Solubility Concept Questions for 5 activitites (Inquiry Based)
- Molecules and Light-inquiry for high school
- Sugar and Salt Solutions: intro to bonding
- Reactions and Rates 1 Introduction to reactions (Inquiry Based)
- Salts and Solubility 1: introduction to salts (Inquiry Based)
- Reactions and Rates College version for tab 3- kinetics (Inquiry Based)
- Reactions and Rates 2: Intro to Kinetics (inquiry based)
- Ley de Ohm y circuitos básicos
- ASSOCIAÇÃO DE RESISTORES
- Forces & Motion: Basics HTML5 - Part 2 (Friction)
- Balloons and Static Electricity for Middle School
- Reactants, Products, and Leftovers Review Activity: Limiting Reactants in Chemical Reactions Review
- Reactants, Products and Leftovers Activity 1: Intro to Chemical Reactions and Limiting Reactants
- Reactants, Products, and Leftovers Activity 2: Limiting Reactants in Chemical Reactions
- Charges and Fields Remote Lab Introduction to Static Electricity
- Forces and Motion: Finding the Mass of a Car
- Presión hidrostática por indagación
- Introduction to Discharge Lamps
- Balloons and Buoyancy : How do gases in different containers behave in gases fluids?
- Reactants, Products, and Leftovers Concept Questions
- Limiting Reactants
- Calculus Grapher: Relating motion graphs to calculus graphs
- Balloons and Bouyancy: An Introduction to Bouyancy - (Inquiry Based)
- Identifying the Limiting Reactant
- Formas y cambios de energía
- UNIDAD3 S14 L1 Medir voltajes
- Le développement du modèle atomique de Rutherford
- Kracht en beweging
- Oplossing (Veren en massa's)
- Salts and Solubility 3: Solution Equilibrium and Ksp (Inquiry Based)
- Introduction to Static Electricity using Electric Field Hockey and Charges and Fields (Inquiry Based)
- Solutions Unit Sample
- Analisis de un Capacitor de placas paralelas
- Energía Mecánica
- Investigación básica en estequiometría
- Electric Energy and Capacitance demonstrations (Inquiry Based)
- Reactions and Rates 4: Equilibrium LeChatlier
- Inquiry Based Modeling Static Electricity
- Preguntas conceptuales: Neurona
- Saturated Solutions - Interactive Lecture Demonstration
- Strong and Weak Acids
- Acid Concentration and Strength Investigation
- Conductivity: an inquiry activity (also uses other sims)
- Masses and Springs Homework Determine Unknowns (Inquiry Based)
- Conservation of Energy using Masses and Springs (Inquiry Based)
- Conservation of Energy using Masses and Springs (homework version) (Inquiry Based)
- Acid Base Solutions - Concentration and Strength
- Fluid Pressure - an inquiry introduction
- Cinética química. Preguntas conceptuales.
- Kracht en Beweging. Google Quizen
- Kracht en versnelling klas 3 vwo
- Jugando con Circuitos Eléctricos
- Simuler le fonctionnement d'un éclairage
- Molecules and Light - Guided Inquiry Activity
- Gravity and Orbits Lesson
- Solar System NGSS aligned
- Gravity and Orbits Investigation
- Static Magnetic and Electric unit (Inquiry Based)
- Oefenen lenzenformule en construeren beeld
- Concept Questions for Chemistry using PhET
- Massa's en veren
- Preguntas desafiantes sobre el segundo principio de Newton
- Circuit 1 Properties of Electric Circuits (Inquiry Based)
- Opdracht over Dichtheid
- Práctica de observación y comparación Teoría VS Experimentación
- Intro: Gravedad y Orbitas
- Concept questions for Physics using PhET (Inquiry Based)
- Models of Hydrogen Exploration
- Circuit Activity 2 Series & Parallel Circuits (Inquiry Based)
- Circuit activity 3 Combination Circuits using CCK only (Inquiry Based)
- Circuit 1 Properties of electric Circuits using only CCK(Inquiry Based)
- Circuit activity 2 Series and Parallel Circuits using only CCK (Inquiry Based)
- Circuit activity 3 Combination Circuits (Inquiry Based)
- TRANSPORTE A TRAVÉS DE LA MEMBRANA CELULAR
- Using PhET in High School Chemistry- all my activities in pdf
- ¿Cómo una disolución afecta los niveles de pH en ácidos y bases?
- Conductividad Eléctrica - Soluciones
- Krachten als oorzaak van versnelling en wetten van Newton
- E/M Waves
- Kinetics Guided Inquiry
- Exploring Equilibrium
- Reacciones químicas
- Physical vs Chemical Change 8th grade
- Probability Plinko
- Reaction Rates
- Exploring Equilibrium 2 (Le Chatelier's Principle)
- Eating and Exercise Activity
- Exploring Average Atomic Mass
- Hot Air Balloons Lesson
- Calculus Grapher for Math (Pre-Calculus or Calculus)
- Investigation of sugar and salt solutions
- Forces and Motion: Tug O' War
- isotopes and atomic mass
- ¿Todo bien en casa?
- Circuitos en serie 2
- Introduction to Electrostatics
- Balloons and Static Electricity
- Electrical Charge Lab
- Balloons and Static Electricity | Remote Lab
- PULSOS EN UNA DIMENSION
- Circuitos eléctricos
- Praktische opdracht breking en terugkaatsing Havo 4
- Energía en Acción: ¡Transforma y Sorpréndete !
- Circuit Construction Kit- series of three activitites (Inquiry Based)
- Verschil amplitude en frequentie
- Proporcionalidad en el Equilibrio Rotacional
- Using PhET in Electricity Unit
- Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based)
- Ley de Masa
- Beta Decay Investigations
- Moteur en PhET
- Guía Balanceo de ecuaciones químicas
- Kennismaken met bewegingsdiagrammen en versnelling
- Actividad: onda en una cuerda
- Visualization and Visual Illusions SIM Homework
- Basic Electricity: short inquiry activities includes ideas for several sims
- Forces and Motion
- Temperature and Energy NGSS aligned
- Soluciones químicas, concentración en molaridad
- Energy Forms and Changes PhET Lab
- Energy Chains
- Bending Light -Refraction and Reflections
- Refraction Investigation
- Bending Light Exploration Lab
- Energy Forms and Changes Simulation
- Mapping Electric Fields
- Exploring How Light Behaves at Boundaries
- Thermal Energy Scientific Inquiry
- Hoja de Actividades de Ciencias: Soluciones Ácido Base
- Opdrachten bij Reactanten, producten en resten
- Instructie en opdrachten (met antwoorden) zouten&oplosbaarheid
- Werkblad simulatie kracht en beweging klas 2
- Intermolecular Forces and Molecules - Interactive Lecture Demonstration
- Wave unit (Inquiry Based)
- Guia para trabajar Masa - Resorte con aplicación de gráficas en Excel
- Plan de clases - Lanzamiento de proyectil
- Vergroting en verkleining
- Batterijen in serie en parallel
- Energías en el Skate Park
- GUÍA DE TRABAJO EN CLASE
- Waves & The Electromagnetic Spectrum
- Hooke's Law (Hands-on & PhET)
- Experimental Design with Forces
- Preguntas clicker sobre Concentración
- Laboratorio Virtual del Circuito R-C basado en los lineamientos del Aprendizaje Activo de la Física
- Estática en el balancín: Fuerzas y momentos
- Formación de imágenes en espejos y lentes
- Introducción a la igualdad en ecuaciones lineales
- Guia de Laboartorio Círcuito en Serie
- Momento y Colisiones en una dimensión
- Guia de aprendizaje sobre vectores en simuladores
- Opladen door wrijving, influentie, geleiders en isolatoren - Google Quiz - guided inquiry
- Variación de la Intensidad del Campo Eléctrico en la Bisectriz de un dipolo
- Plan de Clase Datación Radioactiva ☢
- practicum laboratory test "pendulum"/ practicum toets "slingeren"
- Introductie Lading, trui en ballon
- Expresiones Algebraicas
- Associação de resistores e geradores.
- Circuit design challenge
- Actividad en Genially con la pista de patinaje
- UNIDAD2 S7 L12 Energía mecánica en el péndulo
- Zekering gebruiken als beveiliging tegen Kortsluiting en overbelasting.
- Actividad para formalizar el Primer Principio de Newton y el concepto de Inercia, basada en predicciones
- Series and Parallel circuits basics
- Circuit inquiry for Middle school
- El ruido y la contaminación acústica en mi ciudad
- PRACTICAS DE SIMULACIONES
- Dispersión de la luz
- Período de oscilación de un sistema masa-resorte
- Globos y electricidad estática, Molina Ma Flor.pdf
- Forca dhe levizja 2
- Waves and sound(in dutch golven en trillingen)
- Stroomsterkte voor en na een lampje
- Factores que intervienen en la selección natural
- Formación de Imágenes en un Espejo Cóncavo
- Laptop opdracht 50 minuten
- Expandiendo y Factorizando Expresiones Algebraicas
- Reactions and Rates: Learning Goals from the design team (Inquiry Based)
- Números de arriba y abajo en una fracción
- Laboratorio Virtual para abordar la Ley de Inducción de Faraday basado en las propuestas del Aprendizaje Activo de la Física
- Sumando y Restando Expresiones
- EXplosión de gas
- Estados de la materia: Cambio en la estructura molecular del agua
- Inleiding constructieve en destructie interferentie bij transversale golven op een koord
- Leyes de Kirchhoff
- Battery-Resistor Circuit Simulation Homework
- Battery-Resistor Circuit Simulation Homework III
- Battery-Resistor Circuit Simulation Homework II
- Molecule Shapes - Guided-Inquiry Activity
- Build an Atom - Clicker Questions
- Investigation of a Solution’s Color (Qualitative) - Guided Inquiry Activity
- Energy Skate Park Basics - Clicker Questions
- Build an Atom - Guided-Inquiry Activity
- Investigation of a Solution’s Color (Qualitative and Quantitative) - Guided Inquiry Activity
- Concentration - Interactive Lecture Demonstration
- Molecule Polarity - Guided Inquiry Activity
- Balancing Chemical Equations - Clicker Questions
- Concentration - Clicker Questions
- Molecule Shapes - Clicker Questions
- States of Matter Basics - Clicker Questions
- Molecule Polarity - Clicker Questions
- Generating Equivalent Expressions
- Scaling Shapes Activity and Lesson
- EM wave analogy tutorial
- Investigating Climate Change at the Macroscopic and Microscopic Level
- Density-introduction
- Induction (high school version) (Inquiry Based)
- Modeling Friction (Inquiry Based)
- Wave demonstrations: water, sound, light (Inquiry Based)
- Fraction Matcher Game
- Gravity Lab- intro
- Entropy, Microstates, and Probability - Interactive Lecture Demonstration Guide
- Finding and Using Unit Rates
- Exploring Slope and Speed
- Exploring Gravity
- Slope and Speed (revised)
- Trig Tour - Seeing Patterns in a Unit Circle
- Trig Tour - Connecting the Unit Circle to the Graph
- DC circuits lab with real equipment and CCK
- Defining Functions
- Ladybug Motion 2D Vector controls for circle/elliptical motion (inquiry based)
- Gravity Force Lab : calculations
- How to make a laser
- Understanding the Photoelectric Effect
- Wave Particle Duality
- Intro to Photoelectric Effect Interactive Lecture
- Springs and Things
- Probability and Randomness Interactive Lecture
- MRI lecture and homework
- Davisson Germer lecture and homework
- Kinetic Molecular theory review
- Algebraic Expressions
- Adding and Subtracting Expressions
- Expanding and Factoring Algebraic Expressions
- Electric Field Hockey Simulation Homework
- Stern Gerlach clicker questions
- Buoyancy: How Does Buoyant Force Act on Objects in a Fluid?
- PhET Collision Lab
- Forces and Motion: Balanced and Unbalanced Forces, and Predicting Changes in Motion (Inquiry Based)
- Build an Molecule - concept questions
- Molecule Shapes- inquiry
- Ramp Middle School Inquiry
- Balancing Act Inquiry
- Energy Skate Park Basics
- Slope Lesson and Activity Sheet
- Point-Slope Lesson and Activity Sheet
- Slope-Intercept Lesson and Activity Sheet
- Membrane Channels: inquiry into cellular diffusion
- Plate Tectonics Inquiry
- Radioactive Dating Game inquiry
- Beer's Law Warm-Up
- Moving Man (Inquiry Based)
- Force and Motion activity 2: Relating graphs and free body diagrams using Moving Man and Forces 1D (Inquiry Based)
- Sound: An Introduction (Inquiry Based)
- Wave Representations (Inquiry Based)
- Vector Addition 1: Introduction to vector math (Inquiry Based)
- Ladybug Revolution activity: Exploring rotational motion (Inquiry Based)
- Maze Game 1: Using vector representations to move through a maze (Inquiry Based)
- A Projectile Motion-Introduction (Inquiry Based)
- Arithmetic Games (Inquiry Based)
- Fourier Making Waves Game (Inquiry Based)
- Ramp Activity 2: Calculating Net force on an incline (Inquiry Based)
- Induction (college homework version) (Inquiry Based)
- Maze Game 2: Vector controls for circular motion (Inquiry Based)
- Vector Addition 2: Understanding Force equilibrium (Inquiry Based)
- Sound_Inquiry for Middle School
- Maze game: 2 activities in pdf (Inquiry Based)
- Equation Grapher: Sketching Linear and Parabolic Graphs (Inquiry Based)
- Forces and Motion activity 1: Predicting speed and directions changes (Inquiry Based)
- Curve Fitting: How well does the curve describe the data? (Inquiry Based)
- Collision Lab : Introduction to One Dimension collisions
- Gas Properties-Inquiry Middle School
- Resonance: Upper-division college
- Build an Molecule - Inquiry-based basics
- Resonance-Introduction to Natural Frequency
- Capacitor Lab: Inquiry into Capacitor Design
- Energy Skate Park Clicker Questions (Inquiry Based)
- Molecule Polarity- Inquiry and Applications
- Gene Machine: Lac Operon -an inquiry lesson
- Greenhouse gases - sense making by observing photons
- Gas Properties Gas Laws Quantitative
- Alpha Decay investigations
- Neuron - an inquiry lesson idea
- Friction demonstration
- Magnets-Introduction (Inquiry Based)
- Wave Modeling and Wave addition (Inquiry Based)
- Build an Atom
- Atomic models homework (Inquiry based)
- Ramp Activity 1: Using free body diagrams for motion on an incline (Inquiry Based)
- Invention Lab_Wave Interference
- States of Matter (Inquiry based) Phase Change and Phase diagrams
- What are the chances?
- Intermolecular Forces and States of Matter - Interactive Lecture Demonstration
- States of Matter Lecture Demonstration
- Trig Tour - Using Reference Angles with a Unit Circle
- Molecule Polarity
- Pendulum Lab 2: Find g (Inquiry Based)
- Potential Difference in Circuits
- Patterns and Ratios
- Using Ratios and Rates to Solve Problems
- Comparing Unit Rates
- Displaying, Analyzing, and Summarizing Data
- Discovering patterns of current and voltage in series and parallel circuits
- Kinetic Molecular Theory- Introduction (inquiry-based)
- Gases Understanding physical properties of gases (Inquiry Based)
- Gas Properties Modular Homework Activity
- Build an Atom Game Remote Lab
- Balancing Act Remote Lab
- Resistance in a Wire Remote Lab
- BendingLight_Remote_Lab
- Ohm's Law Remote Lab
- Introduction to Circuits Remote Lab
- Balancing Chemical Equations - Inquiry based Introduction
- Build an Atom: Introduction
- Beer's Law Lab - Guided Inquiry Activity
- Waves on a String (Inquiry Based)
- Waves Intro Remote Lab
- Capacitor_Lab_Basics _html_Remote_lab
- pH Scale inquiry-based intro to acid-base
- Concentration PhET – Understanding Molarity and Parameters affecting Molarity
- pH Scale Basics Remote Lab1
- Molarity and Dilution
- Waves Interference Remote Labs
- Color Vision Remote Lab
- Coulomb Law Remote Lab
- Build an Atom - Inquiry-based basics (homework version)
- Energy Skate Park-NGSS aligned HS
- Conservation of Energy 4 Energy Skate Park: Calculations with Conservation of Mechanical Energy using time graphs (Inquiry Based)
- Energy Skate Park - Concept Questions Compendium
- What is a Fraction?
- Build a Molecule - Molecular Formulas and Coefficients
- Waves: Superposition (Inquiry Based)
- Energy Skate Park Basics: Mechanical Energy Lab
- Graphing Quadratics
- Density: How Does Density Relate to Mass &Volume and an Object's Interaction with Water?
- Balancing Chemical Equations - Guided Inquiry Activity
- Wave clicker questions (Inquiry Based)
- Images from Convex Lenses (Inquiry Based)
- Describing Location and Movement
- Introduction to Median
- Comparing Ratios
- Grocery Comparisons
- Shape, Center, and Spread
- Pendulum Lab 1: Intro to pendulum (Inquiry Based)
- How Will This Isotope Decay?
- Conservation of Energy 1: Introduction (qualitative approach)
- Conservation of Energy 2: graphs analysis
- Choral counting
- Comparing numbers using a vertical number line
- True or False? Kindergarten
- Radioactive Decay
- Radioactive Decay
- Drag and count
- Subtraction stories
- What is greater and less?
- Addition strategies within 10 (or 20)
- Ten and how many more?
- My mystery number
- Choral Counting
- Family of Mr. 10
- Organize it!
- True or False? 1st grade
- Count and Compare
- Nuclear Fission Inquiry
- Exploring Boxplots and IQR
- Exploring MAD
- Interpreting Chemical Symbols
- Exploring Radioactive Decay and Its Uses
- Investigating the pH Level of Beverages
- 3 Activities for Kepler's Laws of Planetary Motion
- Bohr Model of the Hydrogen Atom
- Investigating Molecule Shapes
- Maxwell-Boltzmann Distribution Curves
- How Strong is this Bond?
- Exploring Data to Make Predictions
- Fuerzas sobre un resorte II
- Parliamo di temperatura
- W, Ek en Ez, Energie vergelijkingen laten leven.
- Qué factores afectan a la Solubilidad en las Soluciones
- Vamos a aprender a aplicar las operaciones en la recta numerica juntos
- Comparando expresiones equivalentes
- Explorando la genética Mendeliana
- Explorando la selección natural (9º grado)
- JUGANDO CON LOS NÙMEROS
- Punto - Pendiente Lección y Hoja de Actividades
- Explicando la selección natural (2º grado)
- ¡QUE LA FUERZA TE ACOMPAÑE!
- Física del Caos
- Ενεργειακά Διαγράμματα
- Hablemos de temperatura
- Pasqyrimi dhe perthyerja e drites
- Pasqyrimi i plote i brendshem
- Introduccion al campo eléctrico
- APRENDAMOS SOBRE LAS MOLÉCULAS QUE INTERVIENEN EN LA EXPRESIÓN GÉNICA A TRAVÉS DEL USO DE UN SIMULADOR PhET
- Gas Properties and Balloons & Buoyancy Simulations Homework
- PhET Sims Aligned to the Chemistry Curriculum
- SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017)
- Laboratorio Segunda Ley de Newton
- Charges Activity with Various Simulations
- Reacciones químicas y balanceo de ecuaciones
- Clases Demostrativas Interactivas (ILD) de Movimiento Rectilíneo Uniforme
- Escala de pH, introducción a ácidos y bases con indagación
- ¿Qué tanto ocupo?
- Pendiente-Intersección Lección y Hoja de Actividades
- NUMEROS MIXTOS PLAN DE CLASE Y HOJA DE TRABAJO
- Disoluciones
- Mis Primeros Numeros
- Isótopos y Masas Atómicas
- Alignment of PhET sims with NGSS
- Dinámica de Fluidos.
- Guía de trabajo
- Hoja de Trabajo-Fuerzas y Movimiento
- Digitaal vraagstuk rond de wet van Hooke
- Gravitação
- Investigating Gravitational Interactions
- Movimiento en dos dimensiones: Caso del Proyectil (Two dimensions movement, projectile case).
- GUÍA PRACTICA “MUTACIONES EN LOS SERES VIVOS” PARA IMPLEMENTAR EL USO DE SIMULADORES PhET
- Definiendo Funciones
- Tiros de banco
- Concentración
- 2nd Law Simulation Lab
- Force, Mass, Acceleration
- potential barrier lab
- Forces and Motion: Basic - Concept Introduction
- Gravity, Orbits and Kepler's Laws
- Force and Motion Sim Activity
- Force and Motion Investigation
- Visualizing Mixing with Sugar and Salt Solutions
- Investigating Forces and Motion Through Inquiry
- Forces and Motion: Friction
- Tug Wars: May The Forces Be With You!
- Physical Science Limiting Reactants Intro
- Eating and Exercise PhET: Body Systems grade 4-5
- Students' Learning Activity (Fluid Pressure & Flow)
- Healthy Eating and Proper Exercise
- Forces and Motion
- Introduction to Forces and Newton's Laws
- Fluid Pressure and Flow Phet Simulation worksheet
- High School Chemistry 1 level: Limiting reagents
- NGSS MS-PS2-5 Aligned
- Isotopes
- Reactions and Rates
- Student Guide for PhET - Reactants, Products and Leftovers in html5
- Guided Discovery: BMI, BMR, Calories in/out
- Calculus Graphing
- Health and Exercise
- Understanding Rates of Reactions
- Static Electricity: A Force to be Reckoned With
- friction
- Eating and Exercise digital lesson
- Producing Electromagnetic Radiation using a Neon
- LeChateilier's Principle - Concentration
- The Visible Spectrum
- Spectra of Light
- Buoyancy and Balloons
- Salts & Solubility
- Atomic Spectra and the Composition of Stars
- Experimenting with forces (CER)
- 풍선과 정전기 SIM 사용지침서
- Reflectioin and spherical mirror
- Gravity Assist
- Modeling Isotopes
- Modeling Relative Atomic Mass
- Gravity and Orbits Student Guide
- Gas Relationships and Buoyancy
- Balloons and Electrostatics Student Guide
- Sugar and Salt Solutions
- Hooke's Law Lab
- Discharge Lamps & Flame Tests
- Static Pressure
- Middle School Science
- Force
- Forces, Friction and Motion
- Fluids Lab
- Fluid Experiments
- 설탕과 소금 용액의 SIM 사용지침서
- 풍선과 부력 SIM 사용지침서
- 미적분 그래프 작성기 사용설명서
- Introduction to Ionic & Covalent Bonding
- Friction and Acceleration
- Static Fluid Pressure and Fluid Flow
- Charges and Fields
- Static Electricity
- Forces and Newton's Laws Review
- Student Guide for PhET - Forces Motion in html5
- Modeling Paradigm Lab- 2nd Law
- Isotopes PhET Activity
- Guided Inquiry - Electric Fields
- Eating and Exercise Simulation Activity
- Applied Forces and Friction and a Review of Newton's 1st and 2nd Law
- Student Guide for PhET - Gravity and Orbits
- factors that determine food requirements in human beings
- PhET Sugar and Salt Inquiry Questions
- forces and motion basics
- Introductions to Solutions
- Discharge Lamps and Electron Transitions
- Investigating the relationship between field and potential around point charges
- Force and Acceleration
- Energy in a Coil Spring
- Kepler's Laws and Orbits
- Eating & Exercise Simulation Lesson
- Isotopes Guided Inquiry
- Eating and Exercise Simulation
- Introduction to Electric Fields Student Worksheet
- Investigating the Parameters of Circular Orbits
- Balanced and Unbalanced Forces - What Causes Acceleration
- Sandwich Stiochiometry
- Investigation
- Spring Mass Experiment
- Change Your Motion
- Games in Net Force
- Second Law Inquiry PhET Forces and Motion
- Forces and Motion with Friction Group Activity
- Investigating Electric Fields
- Exploring Chemical Reactions and the Law of Conservation of Mass
- PHET Motion & Friction Sim Lab
- Hooke's Law and Spring Constant with Energy: Regular Level
- MYP Physics: Electric Force vs. Distance
- Hooke's Law, Spring Constant, and Energy HONORS
- Charges and Fields
- Lab: PhET Sugar and Salt Solutions
- Friction Investigation
- Calculating the Acceleration
- Electric Field and Potential Lab
- Stoichiometry for Remote Learning
- Stable Isotopes
- Net force
- Spring Oscillators Activity
- Introduction to Net Force
- Force and Motion: Mass vs. Speed
- Factors Affecting The Frequency of A simple Harmonic Oscillator
- Lab: Electric Field and Potential
- Electric Field Lab
- Charging By Rubbing
- Isotope Stability and Radioactivity
- Visualizing a Mixture
- NGSS Eating and Exercise Activity HS-LS1-2
- Neon Lights & Other Discharge Lamps: Lab Simulation
- Lab 3 - Force and Motion
- Video: Self-paced learning on Newton's First Law
- Video: Self-paced Investigation on Simple Harmonic Motion of a spring-mass system
- Hooke's Law and The Spring Constant
- Forces and Motion
- PhET Forces Lab
- Lab: PhET Isotopes and Atomic Mass
- Harmonic oscillator
- Static Electricity
- Video: Self-paced learning on Electrical Equipotential Lines
- Balloons & Buoyancy in Air
- Newton's Second Law
- Mixture of Isotopes and Atomic Mass
- Charges & Fields PhET Lab
- friction and acceleration
- Phet Forces and Motion Basics: Friction lab
- Electron excitation and emission spectra
- Gravity and Orbits Experimental Design Research Project
- ORGANIC CHEMISTRY Chemical Reactions of Alkanes and Alkenes
- Determine the static and kinetic coefficients of friction
- e=mc2
- Equilibrium and Le Chatelier's Principle
- Forces Simulator Activity
- Net FOrces
- Force and Motion
- Conceptual Energy and Springs
- Spring Force, Spring Constant and Elastic Potential Energy
- Forces and Motion- Effects of Forces on Motion (Investigation)
- Milk Trucks
- Elastic potential energy, work and Hooke’s law.
- Isotopes
- Isotopes and Atomic Mass
- Isotopes and Atomic Mass Phet Simulation Guided Inquiry
- Forces and Motion activity questions
- Forces and Motion:
- Forces Tug of War
- Hanging Mass
- Electric Field and Electric Field Lines
- Newton's Second Law Investigation
- Isotopes activity sheet
- How do PhET simulations fit in my middle school program?
- Guía de trabajo - Globos y electricidad estática
- Descubriendo la 1ª ley de Newton
- Las Funciones Vectoriales de Variable Real. Análisis de la hélice circular
- Explorando el pH de las sustancias
- Aprendizaje Activo + Simulación (laboratorio Virtual)
- UNIDAD1 S7 L12 Cambios de energía-Sistemas
- Formas de energía y cambios energéticos
- Guía de Aprendizaje sobre las Cargas eléctricas
- Campo Eléctrico
- Is Natural Selection Fur-real?
- Natural Selection Activity
- Speed of a Wave NGSS aligned
- Day 3: Conductors and Insulators
- Electric Field Lab
- Online Quiz for Build An Atom
- Energy Skate Park Lab (html5)
- PhET LAB Beta (IB 7.2)
- PhET LAB Alpha (IB 7.2)
- Structure of the Atom
- Introduction to Oscillations
- An investigation into Building Electric Circuits (Inquiry Based)
- Energy Skater -- Introduction to Mechanical Energy Conservation
- Circuit Construction Kit (DC Only), Virtual Lab
- Estimating the Length of Everyday Objects (Inquiry Based)
- Energy Skate Park Basics Lesson
- Testing Predictions for Projectile Motion
- Gravity Force Investigation (PreAP)
- Inquiry Activity: Waves
- Maze Game- A Velocity & Acceleration Comparison
- How Can You Light A Bulb?
- What is an atom?
- Molecular Geometry Flash Cards
- Waves on a String HTML5 PreAP Lesson
- Gravity Force Lab PreAP using HTML5 Sim
- Atomic Addition
- Balancing Chemical Equations HTML5
- Faraday’s Electromagnetic Lab
- Energy Forms Clicker Questions
- Sound and Wave Basics
- Investigating Density, Volume, Mass and Weight
- Phases of Matter
- Ph12 Lab 5F
- 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
- Collision Lab Basics
- Phet Nuclear Fission Simulation Lab
- Natural Selection Lab
- Discovering Newton's Second Law
- RGB Color
- Conservation of Energy for Middle School
- Gas Investigation for Middle School
- Pendulum investigation for Middle School
- Inquiry Equilibrium activity
- Heat it Up
- Nuclear Processes
- Glaciers Earth Science
- lac Operon Simulation
- How Does Dilution Affect pH Levels of Acids and Bases?
- States of Matter Compare Matrix
- Moving Man, elementary
- Designing Experiments Using Masses & Springs
- Gas Laws
- Energy Skate Park for Middle School(Inquiry Based)
- Roller Coaster Physics Investigation
- Moving Molecules
- Equation Grapher: Stretch Armstrong
- Estimation Game
- Rutherford Scattering
- Swinging Physics Using Pendulum Phet
- Gas Laws Exploration
- Rutherford Scattring Simulation
- Intro to Series and Parallel Circuits
- Energy Transformations
- Density and Buoyancy
- Gravity Force Investigation (AP)
- Resistance in a Wire
- Investigating the Greenhouse Effect
- Photoelectric Effect (PreAP)
- Potential and Kinetic Energy
- Ramp: Forces and Motion Investigation
- Photoelectric Effect (AP)
- Relative Density - sink or float
- Investigating Properties of Transverse Waves
- Wave Interference (PreAP)
- PhET Collisions
- Models of Atom
- Balancing Chemical Equations
- Exploring Changes in States of Matter
- Mechanical energy - Kinetic and Potential
- Properties of a wave
- Ramp lab
- Types of Forces Investigation
- Investigating Electromagnetism Applications
- Walker Lab with Moving Man sim
- Molecules Are Made Up of Atoms
- Parallel Circuit Electrical Relationships
- Electric Field Hockey Using Coulomb's Law
- Exploring magnets, pickup coils and generators
- Balancing Equations
- Fields - NGSS Aligned
- Model of the Hydrogen Atom Handout
- What is an atom?
- Energy, Forces, and Motion basics
- States of Matter
- Introduction to Magnetic Fields (bar magnets and electromagnets) - Inquiry Based
- Math in Motion
- Math in Motion - Tasks
- States of Matter PhET
- Ladybug Motion in 3rd Grade
- Energy Skate Park-NGSS aligned
- Density Lesson (with Putty Lab)
- Equivalent Fractions Day 3 of 3
- What is a Fraction? Day 1 of 3
- Comparing and Ordering Fractins Day 2 of 3
- Finding Properties of Energy (via the skate park)
- Rules for Forces
- Fractions 3 Day Unit
- Build an Atom
- Graphing Activity using Gas Properties Simulation
- mechanical energy - exploring kinetic and potential energy
- 2D Motion
- Exploring Electric Potential, Electric Field and Distance Relationships
- Forces and Motion Lesson
- Atomic Marco Polo
- Balancing Act Homework Activity 1 and 2
- Undergrad MRI Workshop Activity
- The Maze Game
- Testing Ideas from Classical and Quantum Physics
- Working with Fractions
- Moving Man: Pos and Vel Graphs
- The Moving Man: Velocity
- Equilibrium Inquiry and Experiment Activity
- Acid-Base Macro Particulate Symbolic
- Boiling, Freezing, and Melting Points
- Blackbody Radiation and Wien's Law
- Flow stretching and DNA extension
- Flow stretching and molecular motors
- Plate Tectonics
- Bank Shots
- PhET Plate Tectonics
- Circuit Lab 2 - Series and Parallel Circuits
- Kinetic and Potential energy
- Light Behaves Like a Wave (sometimes...)
- Variables that Affect Gravity
- Modeling Universal Gravitation Activity
- Wave Interference with Water Waves (AP)
- States of Matter for Middle School
- Go the Distance!
- Funky Functions
- States of Matter
- Chemistry Theater
- Comparing Functions: Function Sleuthing to Find Rules
- Making Green Paint
- Exploring Solving Systems of Linear Equations
- Comparing Equivalent Expressions
- Projectile investigation for Middle School
- Like Terms and How to Combine Them
- Air Resistance Lesson
- Experimental Design: Projectile Motion!
- Quadratic Projectiles
- Kinematic Equation Activity
- Day 2: Exploring Kinds of Circuits (Series/Parallel)
- Day 1: Lighting a Bulb
- Circuits 3 Day Unit
- Exploring Circuits
- Beaded Factors
- Paint Splat: Comparing Ratios
- Equivalent Expression Exploration
- Building Fraction Sense Using “Fractions Intro PhET Simulation”
- Making Sense of Slope
- Fraction Matcher Scaffolding Lesson
- Quadratic Functions for Projectile Motion
- Linear Equations in Slope-Intercept and Point-Slope Form using “Graphing Lines PhET Simulation”
- Solving Multi-Step Equations
- Introduction to Inequalities
- Exploring Factoring as Undoing the Distributive Property
- Arithmetic (Multiply)
- What is Equality
- Describing Functions
- Quadratic Transformations (Vertex form)
- Area Model Decimals - Grade 6
- Similar Triangles and Slope
- Parabolas on the Move!
- Using Transformations to Graph in Slope-Intercept Form
- Exploring parallel and perpendicular lines
- Grocery Shopping
- Fractions Tops and Bottoms
- Balancing Act
- Natural Selection Lesson by UTeach
- Bunny Blitz
- Energy Skate Park Basics | Remote Lab
- Capacitor Design Remote Lab
- Waves Intro | Remote Lab
- Exploring (proportional) Density
- Exploring Converging Lenses
- Investigating Waves
- Water Waves in an Electric Sink
- Water Polarity and Purification
- pH Scale Basics | Remote Lab
- PhET - Explore Absolute Value on the Number Line Distance Activity
- Lesson Plan for Teaching Shapes of Molecule
- Function Fun
- Understanding Line of best fit and Correlation Coefficient
- Factors Affecting Average Global Temperature
- THE ATOMIC STRUCTURE LESSON PLAN
- Geometric figures
- Greenhouse Gas Lab
- Introduction to energy- a chemical context
- It is not a change... it is a crisis
- Calculating Concentration
- Density Simulation
- Build an Atom
- FLOATING AND SINKING OBJECTS
- Density Exploration
- My Solar System Introduction
- pH Scale
- Chaos Physics
- Factors affecting the period of a simple pendulum
- Electromagnetic Induction
- Movement of substances across a semi-permeable membrane
- Electromagnetic Induction
- Molecule Polarity
- The Atom; Discovery of the Atom
- Lesson plan
- Gravity Force Worksheet
- Balance in the up-and-down
- The physics of the triple jump
- Introduction to vectors
- Arithmetic mean with PhET and GeoGebra
- Exploring integers
- Isótopos y masa atómica
- Laboratorio Virtual : Cargas y Campos Eléctricos
- Ecuación de Continuidad y Principio de Bernoulli
- B5 GRAVEDAD Y ÓRBITAS
- U1 S6 L2 Ley de gravitación universal 1a parte
- Preguntas conceptuales
- Jugando al Tira y Afloje
- Pushing Things Around
- Force and Motion Basics - Second grade
- Forces and Free Body Diagram Lab
- High School Exploratory Lab for Balloons and Static Electricity
- Friction Quantitative Lab
- Physical and Chemical Changes
- Newton's Second Law of Motion
- How does mass effect the speed of a forced object?
- Simple WS with Energy Forms & Changes pHet
- PhET Energy Forms and Changes Virtual Lab
- Newton's 1st & 2nd Laws
- Video: Self-paced learning on Newton's Second Law
- PHET: Masses and Springs 2021
- Video: Self-paced Investigation on Hooke's Law Virtual Lab
- Virtual Lab Activity on Energy Forms and Changes in Systems
- Energy Transformations
- Reactants, Leftovers and Products
- Acceleration
- Introducción a Fricción
- LEY HOOKE Y MOVIMIENTO ARMÓNICO
- Energy Forms and Changes
- Refraction of Light
- Bending Light
- Snell's Law and the Index of Refraction
- Acid-Base WebLab PhET HTML 5 Version
- Acid/Base Solutions
- Student Guide for PhET - Acid Base Solutions in html5
- Energy Forms and Changes Lab!
- Acid-Base WebLab PhET HTML5
- Total Internal Reflection
- Bending Light Worksheet
- PhET Inquiry - Bending Light
- Types of Energy Transferred Worksheet
- Visualizing Resistance
- Snell's law Lab - Inquiry based
- PhET Energy Simulations
- Energy Forms Simulation Activity
- Inquiry to Gravity
- Light and Waves E-Learning Activity
- Activity sheet_reflection_refraction
- Specific Heat Capacity
- Phet Energy Forms and Changes Student Worksheet
- Electric Field vs Electric Potential
- Phet Simulation: Energy Form--Intro(Heat)
- Refraction and Snell's Law
- Critical Angle & Total Internal Reflection
- Friction and Motion
- Guided Inquiry
- Year 8 Energy Transformations, Waste and Efficiency
- PhET Greenhouse Effect Simulations
- temperature and energy
- Energy Flow Chart Lab
- PHET energy forms and changes simulation worksheet to accompany simulation
- energy systems phet worksheet
- Introduction to oscillations and SHM
- Grade 4 Changing Energy
- pH Relationships
- Weak vs. Strong
- What Type of Light Bulb Should I buy for my Grandma?
- reflection refraction and total internal reflection
- Ranking Specific Heat Capacities
- PhET: Energy Forms Worksheet
- Video: Self-paced learning on Energy Transformation
- Hooke's LAw
- Heat Capacity Land and Ocean
- Energy Forms and Changes
- Relationship between frequency and mass, k, and g
- Heat = Energy Transfer
- Energy Transfer
- Investigation of Refraction of light
- Hooke's Law of Elasticity Worksheet
- Science activity sheet: Acids_bases solutions
- Greenhouse Gas Exploration
- Acids and bases Solutions
- Thermal Energy Flow PhET Lab
- Heat or temperature?
- Conservación de jitomate… y energía.
- Transformaciones energéticas
- Laboratorio de Colisiones
- Explorando la gravedad y los péndulos
- Indagación con la clase entera: Ley de Beer & Lambert
- Introducción a los estados de la materia
- Flotación de los cuerpos
- Explorando el movimiento parabólico
- construye una Molécula - Formulas moleculares y coeficientes
- Energía potencial elástica, fuerzas y ley de Hooke
- Formulas y nombres de moléculas
- Pendiente Lección y Hoja de Actividades
- Ácidos y bases: ¿fuertes o débiles?
- Densidad, actividad con la simulación
- Jugamos con las proporciones
- No es un cambio... es una crisis
- Comportamiento de la luz: ¿Qué le pasa a la luz cuando ¿pasa? de un material a otro?
- Radiación térmica
- Reacciones reversibles
- Aparatos de medicion electricos
- Radioatividade: Acidente com Césio 137 em Goiânia
- Soluciones: Unidades de Concentración
- GUÍA DE TRABAJO: COMIDA Y EJERCICIO
- CDI_ Fuerzas y Movimiento
- CARGAS Y CAMPOS ELÉCTRICOS
- La energía y sus transformaciones.
- LR Lab with Simulation Part 2
- LC Lab with Simulation
- RLC Circuits
- Electrostatics Simulations: Introductory
- Ohm's Law
- Ohm's Law, Kirchhoff's Laws, Resistors in Parallel and Series Lab
- Investigation of LR Circuits
- h
- LR Lab with Simulation Part 1
- Static Electricity Lab!
- Exploring Static Electricity
- R-C Circuits
- Exploring electric charges
- AC Circuits
- Gas Law
- LC Circuits and Radio Tuners
- Parallel Connection: Warm Up
- Reflection in a plane surface
- Determining Speed and Intensity of Light during Refraction
- Refraction and Snell's Law Lab