Ratio and Proportion

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Description

Play with the left and right hands in different ways, and explore ratio and proportion. Start on the Discover screen to find each challenge ratio by moving the hands. Then, on the Create screen, set your own challenge ratios. Once you've found a challenge ratio, try to move both hands while maintaining the challenge ratio through proportional reasoning.

Příklady učebních cílů

  • Understand the concept of a ratio and use ratio language to describe a ratio relationship between two hand heights.
  • Understand the concept of a unit rate a/b associated with a ratio a:b, and use rate language in the context of a ratio relationship.
  • Recognize and represent proportional relationships between hand heights.
Version 1.0.1

Teacher Tips

Učitelská příručka (pdf) obsahuje tipy poskytnuté od členů týmu PhET. ( PDF ).

Video Primer

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Sound Features

Teacher-Submitted Activities

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iPad:
iOS 12+ 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, latest version of Firefox, latest version of Google Chrome.

Macintosh Systems:
macOS 10.13+, Safari 13+, latest version of Chrome.

Linux Systems:
Not officially supported. Please contact phethelp@colorado.edu with troubleshooting issues.

Autoři Pomocné knihovny Poděkování
  • Michael Kauzmann (developer)
  • John Blanco (developer)
  • Brett Fiedler
  • Emily B. Moore
  • Matthew Moore
  • Taliesin Smith
  • Amanda McGarry
  • Ashton Morris (sound design)
  • Dor Abrahamson and the Embodied Design Research Lab (UC Berkeley)
  • Clement Zheng, Peter Gyory, and Ellen Do from the ACME Lab (CU Boulder ATLAS Institute)
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