Task Teacher Guide

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Students will demonstrate the concepts and skills that they have developed through these contexts and learning experiences related to ratios, percentages and theoretical probability.

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The purpose of this assessment is for students to demonstrate their understanding of the following big ideas.

• A part of a whole represented as a percentage is a part-whole ratio whose whole is 100;
• A percentage is one of infinitely many equivalent part-whole ratios in a ratio relationship;
• A percentage can be used to scale in tandem and reveal an infinite number of equivalent ratios in a ratio relationship;
• Partitive division can be used to divide a percentage by 100 percent to reveal a rate for the proportional relationship.

The independent assessment will allow students to demonstrate concepts and skills related to the following learning goals:

• I can represent a ratio as a fraction.
• I can represent a ratio as a percentage.
• I can demonstrate an understanding of equivalence.
• I can demonstrate an understanding of theoretical probability.
• I can plot the likeliness of an outcome on a 0 to 1 number line.
• I can determine an unknown quantity within a ratio when given sufficient information about the relationship between the two quantities.

Students might write and/or model their answers independently. Students can also be interviewed by their teacher.

An alternative assessment opportunity should be offered if this tool will not successfully capture what the student knows, understands or can do.

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Math Talk

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Determine the missing quantity in each of the following ratios.

Represent the theoretical probability of all possible outcomes as a percentage.

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Assessment

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Question #1:

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Question #2:

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Question #3:

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We suggest collecting this reflection as an additional opportunity to engage in the formative assessment process to inform next steps for individual students as well as how the whole class will proceed.

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Resources and Downloads

Explore The Entire Unit of Study

This Make Math Moments Task was designed to spark curiosity for a multi-day unit of study with built in purposeful practice, and extensions to elicit and emerge mathematical models and strategies.

Click the links at the top of this task to head to the other related lessons created for this unit of study.