Introduce your kids to the concept of a prefix. This lesson contains a bunch of activities designed to nourish your students' affix identification abilities.

Practice finding unknown numbers in addition equations using fun and silly word problems.

Help students discover how to show numbers in different ways while providing ample opportunities for students to contribute to conversations. Use as a pre-lesson to Let's Jump to Add Two-Digit Numbers or as a stand-alone lesson.

Use this lesson to support students in understanding the symbols used to record numbers. This lesson can be used alongside Comparing Three-Digit Numbers or as a standalone, scaffolded EL support lesson.