Equality Explorer: Basics
Topics
 Equations
 Inequalities
 Proportional Reasoning
Description
Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance. Find all the ways to balance cats and dogs or apples and oranges.
Sample Learning Goals
 Use a balance model to solve an equation for an unknown, and justify your strategies for solving
 Use proportional reasoning to determine the value of a single object
Standards Alignment
Common Core  Math
Teacher Tips
Overview of sim controls, model simplifications, and insights into student thinking ( PDF ). 
TeacherSubmitted 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 Chrome.
Linux Systems:
Not officially supported. Please contact phethelp@colorado.edu with troubleshooting issues.
Design Team  Thirdparty Libraries  Thanks To 


