Unit Rates
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Topics
- Ratios
- Proportional Reasoning
- Double Number Line
- Unit Rate
Description
Discover the unit rate while shopping for fruits, vegetables, and candy. Construct a double number line and look for patterns. Challenge yourself on the race track as you compare cars with different rates!
Sample Learning Goals
- Interpret ratios of mixed units (e.g. $/lb)
- Define the unit rate and determine a method to calculate it
- Predict how changing the numerator or denominator of a rate will affect the unit rate
- Use the double number line to reason about rates and solve real-world problems
- Develop strategies to use the unit rate to solve problems
- Compare unit rates between two simultaneous situations
Standards Alignment
Common Core - Math
Teacher Tips
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Overview of sim controls, model simplifications, and insights into student thinking ( PDF ). |
Video Primer
Teacher-Submitted Activities
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Authors | Level | Type | Subject |
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| Finding and Using Unit Rates |
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Karina K. R. Hensberry | MS | Guided | Mathematics |
| Using Ratios and Rates to Solve Problems |
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Ian Whitacre, Sebnem Tekin | MS | Guided | Mathematics |
| Comparing Unit Rates |
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Ian Whitacre, Sebnem Tekin | MS | Guided | Mathematics |
| Grocery Shopping |
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Daniel Greenberg | MS | Guided | Mathematics | |
| CCSS Math Alignment with Sims |
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Amanda McGarry | HS K-5 MS |
Other | Mathematics | |
| Mapping of PhET and IBDP Physics | Jaya Ramchandani | HS | Other | Physics | ||
| Using Unit Rate to Understand Slope | Karissa Gonzalez | HS MS |
Guided | Mathematics | ||
| Finding Unit Rates Using Addition, Subtraction, Multiplication, and Division | Bethany Konz | MS | Guided | Mathematics | ||
| Preguntas de razonamiento para todas las simulaciones HTML5 |
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Diana López | UG-Intro K-5 UG-Adv Grad MS HS |
HW Discuss |
Astronomy Chemistry Mathematics Physics |
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.
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