Lesson Plan: Adding Ones to Two-Digit Numbers on a Number Line
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to add a one-digit number to a two-digit number when crossing a ten by modeling two jumps on a number line.
Objectives
Students will be able to
- identify when a sum will cross a ten,
- decompose ones to add when crossing a ten,
- solve word problems using an open number line.
Prerequisites
Students should already be familiar with
- adding by breaking apart.
Exclusions
Students will not cover
- adding two two-digit numbers on a number line,
- adding tens on a number line.
