Fractions: Intro
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Original Sim and Translations 
Topics
 Fractions
 Equivalent Fractions
 Improper Fraction
 Number Line
Description
Explore fractions while you help yourself to 1/3 of a chocolate cake and wash it down with 1/2 a glass of water! Create your own fractions using fun interactive objects. Match shapes and numbers to earn stars in the fractions game. Challenge yourself on any level you like. Try to collect lots of stars!
Sample Learning Goals
 Predict and explain how changing the numerator of a fraction affects the fraction's value
 Predict and explain how changing the denominator of a fraction affects the fraction's value
 Convert between a picture of a fraction, a numeric fraction, and a point on a number line
 Build matching fractions using numbers and pictures
 Compare fractions using numbers and patterns
Standards Alignment
Common Core  Math
Teacher Tips
Overview of sim controls, model simplifications, and insights into student thinking ( PDF ). 
TeacherSubmitted Activities
Title  Authors  Level  Type  Subject  

What is a Fraction?  Anonymous  K5  Other  Mathematics  
Comparing and Ordering Fractins Day 2 of 3  Meaghan Hixson  K5  Guided  Mathematics  
What is a Fraction? Day 1 of 3  Meaghan Hixson  K5  Guided  Mathematics  
Building Fraction Sense Using “Fractions Intro PhET Simulation”  Philippe Guegan  MS K5 
Guided Discuss 
Mathematics  
Equivalent Fractions Day 3 of 3  Meaghan Hixson  K5  Guided  Mathematics  
Fractions 3 Day Unit  Meaghan Hixson  K5  Guided  Mathematics  
Alignment of PhET sims with NGSS  Trish Loeblein  HS  Other  Physics Biology Chemistry Earth Science 

How do PhET simulations fit in my middle school program?  Sarah Borenstein  MS  Other  Biology Physics Chemistry Earth Science 

Naming Fractions  Bettie Parker  K5  Guided HW Demo Discuss Lab 
Mathematics  
분수 소개 SIM 사용설명서  이화국(Wha Kuk Lee)  MS  HW Demo 
Mathematics 
Browse legacy activities.
The new HTML5 sims can run on iPads and Chromebooks, as well as PC, Mac, and Linux systems.
iPad:
iOS 11+ Safari
iPad compatible sims
Android:
Not officially supported. If you are using the HTML5 sims on Android, we recommend using the latest version of Google Chrome.
Chromebook:
Latest version of Google Chrome
The HTML5 and Flash PhET sims are supported on all Chromebooks.
Chromebook compatible sims
Windows Systems:
Microsoft Edge and Internet Explorer 11, latest version of Firefox, latest version of Google Chrome.
Macintosh Systems:
macOS 10.9.5+, Safari 9+, latest version of Firefox, latest version of Chrome.
Linux Systems:
Not officially supported. Please contact phethelp@colorado.edu with troubleshooting issues.
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