Lesson Plan: Doubles Plus Two
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to apply the strategy of adding doubles by solving problems involving doubles plus two.
Objectives
Students will be able to
- recognize situations in which doubles plus two is a reasonable strategy for solving addition problems,
- use models to solve addition problems by using the doubles plus two strategy,
- solve addition problems by using the doubles plus two strategy without using models.
Prerequisites
Students should already be familiar with
- doubles facts up to ,
- basic concepts of addition,
- reading addition sentences written both vertically and horizontally,
- solving addition problems involving doubles plus one strategy.
Exclusions
Students will not cover
- doubles plus two calculations with a sum greater than 20,
- the use of number lines to model addition problems,
- the doubles minus one strategy.
