نتایج جستجو
659
شبیه سازی ها
- آزمایشگاه آونگ (HTML5)
- آزمایشگاه برخورد (HTML5)
- آزمایشگاه نیروی گرانش (HTML5)
- آزمایشگاه نیروی گرانش: مقدمات (HTML5)
- آشنايي با نيروها و حركت؛ اصول اولیه (HTML5)
- اصطکاک (HTML5)
- انرژی در پیست اسکیت (HTML5)
- انرژی در پیست اسکیت: مقدماتی (HTML5)
- بادکنک ها و شناوری
- بار در حال تابش
- بازي گيج كننده
- برهم کنش های اتمی (HTML5)
- تشديد
- تولید موج ها
- جرم ها و فنرها (HTML5)
- جرم ها و فنرها
- جرم ها و فنر ها: مقدمات (HTML5)
- جمع برداری (HTML5)
- حالت های ماده (HTML5)
- حالت های ماده: مقدماتی
- حركت كفش دوزك
- حرکت در دو بعد
- حرکت پرتابه (HTML5)
- دوران کفشدوزک
- سطح شیبدار
- سطح شیبدار: نیروها و حرکت
- سفر به دنیای مثلثات (HTML5)
- شناوری
- فرود روی ماه
- فشار مايع و شاره
- فوریه: درست کردن امواج (HTML5)
- قانون هوک (HTML5)
- قانون کولن (HTML5)
- قانون گشتاورها (HTML5)
- مد طبيعي
- مرد متحرک
- منظومه شمسی من (HTML5)
- موج در ریسمان (HTML5)
- موج های رادیویی و میدان های الکترومغناطیسی
- مولکول ها و نور (HTML5)
- موچین نوری و نرم افزار
- میکروموج
- نیرو در یک بعد
- نیروها و حرکت
- هاكي روى چمن الكتريكي
- واپاشی آلفا
- واکنش های برگشت پذیر
- ویژگی های گاز (HTML5)
- پخش (HTML5)
- کشش دی ان ای
- گرانش و مدار (HTML5)
- گشتاور
- Calculus Grapher (HTML5)
- Kepler's Laws (HTML5)
- Projectile Data Lab (HTML5)
- Projectile Sampling Distributions (HTML5)
فعالیتها
- Forces & Motion: Basics HTML5 - Part 2 (Friction)
- Forces and Motion
- Forces and Motion: Finding the Mass of a Car
- Forces and Motion: Balanced and Unbalanced Forces, and Predicting Changes in Motion (Inquiry Based)
- Forces and Motion: Tug O' War
- Forces and Motion Lesson
- Forces and Motion activity 1: Predicting speed and directions changes (Inquiry Based)
- Types of Forces Investigation
- Rules for Forces
- Force and Motion activity 2: Relating graphs and free body diagrams using Moving Man and Forces 1D (Inquiry Based)
- Energy, Forces, and Motion basics
- Ramp Activity 1: Using free body diagrams for motion on an incline (Inquiry Based)
- Ramp: Forces and Motion Investigation
- Intermolecular Forces and Molecules - Interactive Lecture Demonstration
- Ramp Activity 2: Calculating Net force on an incline (Inquiry Based)
- Experimental Design with Forces
- Forces & Motion
- Forces and Motion activity questions
- Forces and Motion
- Forces and Motion- Effects of Forces on Motion (Investigation)
- Forces and Motion: Basic - Concept Introduction
- Ramp lab
- Forces and Motion
- forces and motion basics
- Ramp Middle School Inquiry
- Fuerzas en una rampa (actividad de indagación)
- Forces and Motion:
- Forces Simulator Activity
- PhET Forces Lab
- Forces Tug of War
- Forces and Motion: Basics Dutch
- Net FOrces
- Forces and Free Body Diagram Lab
- Balanced and Unbalanced Forces - What Causes Acceleration
- Student Guide for PhET - Forces Motion in html5
- forces and motion elhaam
- Introduction to Forces and Newton's Laws
- Impulso no "Forces and Motion: Basics (HTML5)"
- FORCES AND MOTION WITH WORK ENERGY
- Projectile motion
- 2D Motion
- Forces and Motion - Friction and Free Body Diagrams
- Experimenting with forces (CER)
- Forces, Friction and Motion
- Preguntas desafiantes sobre el segundo principio de Newton
- Ley de Masa
- Games in Net Force
- Investigating Forces and Motion Through Inquiry
- Force and Motion: Basics
- Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based)
- Testing Predictions for Projectile Motion
- Friction and Motion
- Force and Motion
- A Projectile Motion-Introduction (Inquiry Based)
- Applied Forces and Friction and a Review of Newton's 1st and 2nd Law
- Force and Acceleration
- Forca dhe levizja 2
- Newton's 1st & 2nd Laws
- Net Forces and Newton's Second Law
- Forces and Motion: Friction
- Second Law Inquiry PhET Forces and Motion
- Force and Motion Sim Activity
- Force and Motion Investigation
- Forces Virtual Lab Ramp
- motion along straight line with constant speed
- 2ª Lei de Newton e Força de Atrito no "Forces and Motion: Basics (HTML5)"
- Middle School Science
- PHET Motion & Friction Sim Lab
- Forces and Motion with Friction Group Activity
- Force and Motion: Mass vs. Speed
- Guided Discovery (Chinese/English) for Freshman University Physics: 2. Newtonian Mechanics
- Net force
- Discovering Newton's Second Law
- Phet Forces and Motion Basics: Friction lab
- Force and Motion
- Forces in 1 Dimension
- Quadratic Functions for Projectile Motion
- Ladybug Motion 2D Vector controls for circle/elliptical motion (inquiry based)
- Lab 3 - Force and Motion
- Forces i moviment
- Forces and Newton's Laws Review
- Newton's Second Law of Motion
- Turning Forces
- Friction Investigation
- Force
- Força, Massa e Aceleração (Básico) no OA "Forces and Motion: Basics (HTML5)"
- Movimento Retilíneo Uniforme (MRU) no "Forces and Motion: Basics (HTML5)"
- Movimento Retilíneo Uniformemente Variado (MRUV) no "Forces and Motion: Basics (HTML5)"
- Force and Motion
- Effectuer une simulation laboratoire
- Tug Wars: May The Forces Be With You!
- Friction and Acceleration
- Ladybug Revolution activity: Exploring rotational motion (Inquiry Based)
- Projectile Motion Experiment Abdulla
- Gravity and Orbits
- Ladybug Motion in 3rd Grade
- Friction demonstration
- Sugar and Salt Solutions - Annotated Lecture Slides
- motion along straight line with constant speed
- 2nd Law Simulation Lab
- Newton's Second Law
- Experimental Design: Projectile Motion!
- Force and Acceleration
- Math in Motion
- Newtons 1. und 2. Gesetz
- Pushing Things Around
- Change Your Motion
- Force and Motion Basics - Second grade
- Intro Lab
- Introducción a Fricción
- friction
- Friction on Incline
- Moving Man, elementary
- Kinematics
- Air Resistance Lesson
- Comparing Forces on Different Planets
- The Maze Game
- The physics of the triple jump
- Math in Motion - Tasks
- Air Resistance
- Maze Game 2: Vector controls for circular motion (Inquiry Based)
- Modeling Paradigm Lab- 2nd Law
- Force introduction
- Força de Atrito
- Friction Investigation
- Teorema da energia cinética
- Forças em Ação
- Compendio de Actividades e ILDs basadas en simulaciones PhET
- Intermolecular Forces and States of Matter - Interactive Lecture Demonstration
- Forces at equilibrium
- Pendulum Lab 1: Intro to pendulum (Inquiry Based)
- projectile motion
- projectile motion
- Projectile Motion
- project motion
- Exploring Projectile Motion
- Projectile Motion Investigation
- Projectile Motion Exploration
- projectile motion
- Projectile Motion
- Projectile Motion
- Projectile motion
- Projectile Motion
- projectile motion
- Atividade de Força e Movimento
- Gamificação da Força e movimento
- Fuerza y Movimiento
- projectile motion
- Projectile motion
- mesues
- Friction Quantitative Lab
- Fuerza de Rozamiento
- How does mass effect the speed of a forced object?
- Força de Atrito
- Laboratorio de Dinamica lineal
- Video: Self-paced learning on Newton's Second Law
- Acceleration
- Fuerza Neta y Movimiento
- Projectile motion
- Projectile motion experiment
- projectile motion
- Exploring EM Forces
- Projectile Motion
- projectile motion worksheet
- Projectile Motion
- Atividades sobre o movimento dos corpos
- Cinemática (Atividades) nos OA's do PhET
- Motion in Two Dimensions
- Projectile Motion Lab
- projectile motion
- Projectile Motion
- Projectile Motion
- projectile motion
- Force, Mass, Acceleration
- Kracht en beweging
- UNIDAD1 S4 L11 Suma de fuerzas colineales
- Krachten als oorzaak van versnelling en wetten van Newton
- Leis de Newton
- Werkblad simulatie Kracht & Beweging
- Qüvvələr və Hərəkət Əsasları
- Werkblad simulatie kracht en beweging klas 2
- Mjerenje sile trenja
- Leis de Newton e Movimento
- Investigation
- Forças e movimento: Noções Básicas
- Primeira e Introdução à segunda Lei de Newton
- Actividad para formalizar el Primer Principio de Newton y el concepto de Inercia, basada en predicciones
- Introdução as Leis de Newton
- 2. Newtonov zakon
- Laboratorio Segunda Ley de Newton
- Calculating the Acceleration
- Kracht en Beweging. Google Quizen
- Introduction to Net Force
- LEYES DE NEWTON Y FUERZAS DE ROZAMIENTO
- Força e movimento
- Guia de trabajo - Fuerza y Movimiento: Intro
- Video: Self-paced learning on Newton's First Law
- Hoja de Trabajo-Fuerzas y Movimiento
- Qüvvələr və Hərəkət
- friction and acceleration
- La fuerza
- Determine the static and kinetic coefficients of friction
- Kracht en versnelling klas 3 vwo
- OSNOVNI ZAKON GIBANJA
- 2. NEWTONOV ZAKON
- Descubriendo la 1ª ley de Newton
- Milk Trucks
- Preguntas conceptuales
- Jugando al Tira y Afloje
- CDI_ Fuerzas y Movimiento
- Forca dhe levizja 1
- Newton's Second Law Investigation
- qüvvə və hərəkət
- Projectile motion lab report
- Projectile motion worksheet
- Projectile Motion Worksheet
- 3 Activities for Kepler's Laws of Planetary Motion
- Concept questions for Physics using PhET (Inquiry Based)
- Horizontal Projectile Motion
- Projectile Motion (Lab Report)
- Projectile Motion (HTML5)
- Kinematic Equation Activity
- Intro y laboratorio virtual de Tiro Parabólico
- Projectile Motion Simulator
- Projectile Motion
- Projectile motion
- Projectile Motion
- Introduction to Forces in 1-D
- Quantitative Predictions of Projectile Motion
- Projectile Motion
- Conservative and non-conservative forces
- Projectile Motion
- Projectile motion, range, time, velocity
- projectile motion
- 大一物理引導式自我發現 (中文/英文): 動力學 (牛頓定律)
- Projectile Motion Worksheet
- Projectile Motion
- Projectile Motion
- Regents Physics- Projectile Motion Intro
- Projectile Motion
- Projectile Motion
- Projectile Motion
- Balancing Act Homework Activity 1 and 2
- Balance in the up-and-down
- Équilibre de la balançoire
- Projectile Motion
- Projectile Motion
- FRICTION_FORCES_in_1_dimension
- Projectile Motion Experiments
- Maze game: 2 activities in pdf (Inquiry Based)
- projectile motion
- 3 Projectile Motion Factors
- Projectile Motion (#lab)
- Projectile Motion
- Projectile motion
- Projectile Motion
- projectile motion
- projectile motion
- projectile motion
- Projectile Motion
- projectile motion
- projectile motion
- Projectile Motion
- projectile motion
- projectile motion
- ChemActivity: Phase Changes and Intermolecular Forces
- Estática en el balancín: Fuerzas y momentos
- Projectile motion - Lab Report
- Projectile Motion Scientific Enquiry
- projectile motion worksheet
- PROJECTILE MOTION LAB REPORT
- Projectile Motion
- Projectile Motion - developing understanding.
- Projectile Motion Experiments
- Forces at Equlibrium
- Projectile Motion Lab Report
- Projectile motion
- equilibrium of forces
- Projectile Motion Worksheet
- Projectile Motion Simulator Worksheet
- 2D Motion Activity
- projectile motion simulation
- Projectile motion lab activity
- Projectile motion lab
- projectile motion experiment
- Investigating Projectile Motion
- Projectile motion
- projectile motion
- Projectile motion
- Projectile Motion
- Exploring Vectors and Projectile Motion
- projectile motion
- Projectile Motion - Lab Experiment
- Projectile Motion Discovery
- Projectile Motion - Physics 1 Lab
- Projectile Motion (Anwar Mabrouk Al-Talha)
- Projectile Motion
- projectile motion
- Projectile Motion
- Forces in 1 and 2 Dimensions
- motion along straight line with constant acceleration
- Projectile motion and horizontal component of its velocity
- Maze Game 1: Using vector representations to move through a maze (Inquiry Based)
- Kinetic Molecular Theory- Introduction (inquiry-based)
- Conservation of Energy 1: Introduction (qualitative approach)
- Conservation of Energy 2: graphs analysis
- Projectile of motion - time of flight (horizontal projectile)
- Inquiry Projectile Activity
- Projectile Motion Virtual Lab Activity
- Projectile Simuation
- SBL-Projectile Motion
- LEARNING AND SIMULATING PROJECTILE MOTION
- Horizontal Projectile Motion Experiment
- Horizontal Projectile Motion
- projectile motion hanan
- Projectile Motion Worksheet
- Free-Fall and Projectile Motion
- Projectile Motion
- Projectile motion
- Projectile Motion
- Projectile Motion
- Force-time graph activity
- Projectile motion
- projectile motion
- Maze Game II (circular motion)
- Projectile Motion
- Projectile Motion
- Get in Motion!
- PRACTICAS DE SIMULACIONES
- Projectile Motion ( including air resistance )
- Projectile Motion - Fired at an Angle
- Projectile Motion Lab Report
- Projectile Motion
- Projectile Motion in Sports
- Projectile motion
- Lançando Projéteis no "Projectile Motion (HTML5)"
- Projectile Motion - Physics 1 lab experiment
- Motion Lab Report
- Rotational Motion
- Horizontal Projectile
- projectile motion
- Motion Graphs
- Projectile Motion Homework
- Projectile motion lab report
- Projectile Motion Lab Report
- projectile motion
- Projectile investigation for Middle School
- Quadratic Projectiles
- Explorando la trayectoria de un proyectil
- La Física del salto triple
- Explorando el movimiento parabólico
- Lluvia de Malvaviscos.
- TIRO PARABÓLICO-FÍSICA.
- A física do salto triplo
- La fisica del salto triplo
- La physique du triple saut
- Motion and Moving Man Simulation Homework
- PhET Projectiles Simulation Lab
- Proving Newton's Second Law
- projectil motion lab report form
- Moving Man (Inquiry Based)
- Projectile Motion Lab Report
- Calculus Grapher: Relating motion graphs to calculus graphs
- IMF and phase changes
- Projectile motion – Complementary Angles and Range
- Dynamics (Gr11) Unit End Exploration
- Dinâmica (Atividades) nos OA's do PhET
- Projectile Motion Investigation
- Projectile Motion-Using kinematic equations
- Queda Livre no "Projectile Motion (HTML5)"
- Comparing Speed and Angle to projectile distance
- Worksheet
- Projectile Motion Experiment
- Projectile Motion: Gravity & Air Resistance
- Coulomb Law Remote Lab
- Mecânica (Atividades) nos OA's do PhET
- Intro to Rotational Motion
- Lançamento Horizontal de Projéteis no "Projectile Motion (HTML5)"
- projectile mothion
- Projectile Motion
- Projectile motion
- Projectile Motion
- Projectile motion
- project motion
- projectile Motion
- projectile motion
- projectile motion
- projectile motion
- Projectile Motion
- Projctile motion
- Projectile Motion Lab #2
- Lançamento Vertical de Projéteis no "Projectile Motion (HTML5)"
- Free fall
- Velocidade e Aceleração no Lançamento de Projéteis no "Projectile Motion (HTML5)"
- Modelling Motion
- Projectile Motion: The Basic Flight Path
- Horizontal projectile motion
- Discovering Newton's Second Law
- States of Matter Basics - Clicker Questions
- Moving Man
- Maze Game
- Moving Man - Velocity vs. Time Graphs
- Gravity: Friend or Foe?
- Friction
- Simple Harmonic Motion
- Oscilatory Motion
- Simple Harmonic Motion (Pendulum & Spring)
- PHET The Moving Man Motion Graphing Model Activity
- Projectiles Air Resistance - It's a Drag
- Projectile
- (Lab Report
- Understanding Projectile Motion
- Projectile Motion and Air Resistance
- Projectile Motion Lab Exploration
- Projectile Motion report
- Project motion worksheet
- projectile motion worksheet
- Projectile motion Experiment
- Horizontal Projectile Motion Lab
- Investigating Springs
- vector addition activity
- Moving Man (Motion Intro)
- Motion Labs using MOVING MAN
- Electric Field Hockey Using Coulomb's Law
- Guided Discovery (Chinese/English) for Freshman University Physics: 1. Kinematics
- Time of flight related to initial speed in a horizontal projectile.
- Fee Fall
- Projectile Motion Phet Simulation Activity
- Projectile Motion--Horizontal and Full Trajectory
- NGSS MS-PS2-5 Aligned
- Microwaves Simulation Activity
- Charges Activity with Various Simulations
- Updated HTML Gravity Sim
- vectors
- Llei de Hooke amb el simulador PhET
- Projectile Lab (Horizontal Launch)
- Projectile Lab (Angled Launch)
- Introduction to rotational motion
- Simple Harmonic Motion & Springs
- Projectile worksheet
- Why do Icebergs Float?
- Moodle et PhetColorado
- Mechanical energy lab - Remote
- Corona vírus vs lançamento de projéteis
- AP Physics PhET Projectile Motion Lab
- Projectile Motion Formal Lab Development and Report
- Investigating Climate Change at the Macroscopic and Microscopic Level
- Hooke's Law and Simple Harmonic Motion
- Using the Coulomb’s Law PhET Simulation: Concept Development for Understanding Electrostatic Forces
- Entropy, Microstates, and Probability - Interactive Lecture Demonstration Guide
- Molecules and Light-inquiry for high school
- Hooke's Law inquiry lab
- Projectile Parabolas
- PhET Simulations Aligned for AP Physics C
- Pendulum Lab
- PREPARATORIA: Alineación de PhET con programas de la DGB México (2017)
- Gravity and Orbits Investigation
- 1 Dimensional Motion - Kinematics and Graphing
- Energy Transformations
- Describing Location and Movement
- Mr. (Moving Man)
- Moving Man Motion Graph Review
- Lunar Lander; Let the Force Be With You
- Electric Field Lab
- The "Lifelike" Moving Man: Variation in motion graphs
- Galileo's Skater Down an Inclined Plan
- Movimiento Armonico Simple: El pendulo y el resorte (Simple Harmonic Motion:pendulum and spring
- Electric Field Hockey Post-Game Analysis
- free fall
- Moving Man Activity
- Wave Motion
- Investigate the Energy of a Pendulum
- Alignment of PhET sims with NGSS
- How do PhET simulations fit in my middle school program?
- Exploring Newton
- Exploring Newtons' Second Law
- חקר כוח חיכוך
- Force of Friction Graphing Ff=(mu)Fn
- Kepler's Laws and Orbits
- Electric Field Intro
- Gravity and Orbits Student Guide
- Unusual cases of oscillation
- PRIMARIA: Alineación con programas de la SEP México (2011 y 2017)
- Video: Self-paced learning - Moving Man Simulation (Motion Graphs)
- Video: Self-paced Investigation on Simple Harmonic Motion of a spring-mass system
- Lunar Lander!
- Moving Man and Maze Game Simulations Homework
- Student Guide for PhET - States of Matter in html5
- Roller Coaster Physics Investigation
- Balancing Act Remote Lab
- Practica Tiro Parabolico (traduccion)
- Movimiento Parabolico. Comaparacion de datos
- Movimiento Parabolico
- Pendulum Lab
- SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017)
- Mapping of PhET and IBDP Physics
- Ladybug Activity
- Moving Man: Anayzing Graphs
- Moving the Man
- Applications of Sinusoidal Functions
- Moving Man Questions
- Activity sheet_Resonance
- Investigating the Parameters of Circular Orbits
- Energy Skate Park Student Simulation
- ปฏิบัติการเรื่องกฎของฮุคและการเคลื่อนที่แบบSHM
- The Simple Pendulum- What affects the Period of the pendulum?
- Moving Man guided inquiry
- Constant Acceleration Motion
- Satellite Motion Lab
- uniformly accelerated motion
- Guided Discovery (Chinese/English) for Freshman University Physics: 5. Introduction to Waves
- Walker Lab with Moving Man sim
- Orbits--effects of mass and distance
- Preguntas de razonamiento para todas las simulaciones HTML5
- Energy Skate Park Formal Lab
- projectile
- Modeling a linear simple harmonic oscillator
- Movimento de projéteis
- Determination of angle of projection for maximum range
- Projectile launch angle vs displacement
- Tir parabòlic
- Projectile
- Horizontal Release Projectile Relationships
- Projectile Investigation
- Lançamento Oblíquo
- Trabajo práctico: Tiro Parabólico
- Projectile Guided Inquiry
- Lançamento de Projéteis
- Lançamento Oblíquo Inicial
- Launching Pumpkins - Solving Quadratic Functions
- Atividade de Lançamento Oblíquo
- Der gerade Wurf
- projectile
- Movimiento en dos dimensiones: Caso del Proyectil (Two dimensions movement, projectile case).
- Motions Air resistance
- Lançamento Vertical no PhET
- HOJA DE TRABAJO
- Composició de moviments. Moviment parabòlic. PhET
- Lançamento de projéteis
- ESTUDIO Y OBSERVACIÓN DEL MOVIMIENTO DE UN PROYECTIL
- Lançamento de projétil
- Laboratorio de movimiento de proyectiles con simuladores PhET
- Horizontal Launch Investigation
- Laboratorio Movimiento parabólico con Phet y Graph
- PHET Free Fall Lab
- Plan de clases - Lanzamiento de proyectil
- MS and HS TEK to Sim Alignment
- Moving Man Simulation Activity
- Balancing Act
- Balancing Act
- Energy Skate Park: Basics
- Introduction to oscillations and SHM
- Chemistry - Introduction to Coulomb's Law
- Conservation Of Mechanical Energy
- Lab Experiment
- Conservation of Mechanical Energy
- States of Matter
- MOVIMENTO CIRCULAR UNIFORME
- Applications of Parametric Equations
- Linear and Quadratic Functions: analysis using graphing
- Guia de trabajo - Movimiento Mariquita 2D
- Pendulum Lab COV Investigations
- Newton's Laws and the Lunar Lander
- Lady Bug Revolution Activity
- Constant Velocity & Uniform Acceleration with the Moving Man
- Factors Affecting The Frequency of A simple Harmonic Oscillator
- Simple Harmonic Motion Virtual Modeling Lab PhET
- Moving Man: Simple Acceleration
- Waves on a string
- Space Cadets Lunar Landing Showdown
- Electric Field Hockey Homework
- Statics and Voltages
- Physics Lab Worksheet Momentum.docx
- Conservation of Mechanical Energy (Lab Report)
- Conservation of Mechanical Energy
- Vector
- Introducción a la Física: medidas, unidades y relación entre variables
- Investigating Gravitational Interactions
- Work Energy on a Ramp
- Moving Man
- 8th Grade Science teacher
- States of Matte Inquiry
- Conservation of Mechanical Energy
- 大一物理引導式自我發現 (中文/英文): 運動學
- Balanced & Unbalanced Torque Webquest
- Spring Mass Experiment
- simple pendulum lap
- Simple Pendulum
- การทดลองOnline 1 เรื่อง ลูกตุ้มนาฬิกาอย่างง่าย
- Moving Man with Position and Velocity graphs
- Introductions to Solutions
- Balancing Torques and Equilibrium
- Pendulum Energy
- Vector Addition Worksheet
- THE MOVING MAN: DISTANCE, DISPLACEMENT, SPEED & VELOCITY
- Position function of mass on spring
- Moving Man Multiple Representations
- States of Matter - Lab Simulation - student procedures and questions
- Energy Skate Park Lesson
- POGIL-style simulation analysis
- Wave pre-lecture introduction for regular level
- Hooke's Law, Spring Constant, and Energy HONORS
- How can sound waves cause a window to shake?