Overview

In this performance assessment, students will be asked to solve three unit rate problems using ratio of whole numbers.

This assessment might best be used after instruction on ratios and proportional relationships, specifically unit rate problems. 

Details

Big Ideas & Competencies

Big Ideas Competencies

B. Operations and Algebraic Thinking

Students can use mathematics to analyze and evaluate historical, political, economic, scientific, and social problems and make conjectures about possible solutions.

Ratios and Proportional Relationships 1

Students can solve unit rate problems using ratios of whole numbers, including those involving unit pricing and constant speed.

NOTE ABOUT ASSESSMENT RUBRICS

Below are analytic teacher rubrics. The column on the left shows the dimension that is being measured in the student’s performance. The levels across the top row indicate the performance level in the dimensions. Occasionally all dimensions and performance levels are exemplified by multiple students in a single recording.

Teacher Rubric

Dimensions Not Yet Meeting Expectations Meeting Expectations Exceeding Expectations

Concepts and Procedures

  • I can solve part of the problem, but I am confused in some places and have calculation mistakes.
  • I can solve the problem using strategies that make sense with few calculation mistakes. 
  • I can solve the problem efficiently and accurately without any calculation mistakes. 

Reasoning and Explaining

  • I can explain some of how I solved the problem.
  • I can explain the thinking I used to solve the problem using some math vocabulary.
  • I can explain the thinking I used to solve the problem using precise math vocabulary in a way that another person can easily understand my math reasoning.

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