Unit 3: Numbers Can Be Used Many Ways

Target Objectives

Worthwhile Task Indicators

Example Tasks

• Gives students an understanding of how to subtract. numbers to each other.

• Makes a connection between place value and subtraction.

• Provides a visual representation of the concept.

• Builds upon the number sense they already have.

• Allows students to generalize based on patterns & properties.

• Fosters discussion between peers.

• This task works better as an enrichment or challenge activity than a teaching tool/strategy. It would be better to teach subtraction strategies before having students complete this activity.

• Students complete a table using both addition and subtraction. Students use the formulas to complete the table and a number cannot be used twice.

• Make sure students provide explanations when asked! The task is provided below.

Challenge/Extension task towards the end of unit:

http://hgse.balancedassessment.org/docs/e014.pdf