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Teach Ratio with Math Snacks

Standard

CCSS.Math.Content.6.RP.A.1 Understand ratio concepts and use ratio reasoning to solve problems.

Technology Required

Computer with projector, for in-class use. Computer or tablet with Internet access for home use.

Time

90 minutes

Summary

Students watch a video from Math Snacks in which Isabella uses the ratio of words she speaks to her date to determine if it was a good or bad day. The video has a companion teacher guide with questions to stimulate students’ thinking about ratios and test their understanding. Students play a game where they brew potions with given ratios to defeat an opponent. Students then complete a learner’s guide assessing and reinforcing their knowledge of ratios.

Lesson

Read the Bad Date Teacher Guide

The Teacher Guide, available from Math Snacks, will give you an overview of the lesson. This guide includes several discussion questions for use with students.

Watch the Bad Date Video

This three- and-a-half-minute humorous video uses the ratio of words in a conversation to show a couple of bad dates and one good one.

Have a class discussion

Use the discussion questions in the Teacher Guide from Math Snacks to check students’ understanding. Note that this will require you to restart a show the video, stopping at specific points.

If you have not yet introduced equivalent ratios to your class, you may want to skip some of these questions and come back later.

Play the Game Ratio Rumble

The Ratio Rumble game can be played online here at the Math Snacks website or downloaded free for iPads. The first game level begins with 1:1 ratios and gets more complex in higher levels.

Students complete the learner guide

It’s called a learner guide, not a worksheet, so that makes it cool! Seriously, the Bad Date Learner Guide, available here from Math Snacks, has two pages of review and assessment items that test understanding. Students are asked to draw a picture of a ratio, complete “what-if” scenarios and give some examples of other situations in which 1:1 ratios would or would not be desirable.

Related lesson

For another introduction of ratio, see the lesson Introduction to Ratio and Proportion.

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