Lesson Plan: Adding Two-Digit Numbers with Regrouping Mathematics • 1st Grade

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This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to add 2 two-digit numbers when crossing a ten and model this with place value models.

Objectives

Students will be able to

identify sums that will involve regrouping,
use place value models to regroup ones,
use place value models to add 2 two-digit numbers,
draw models to add 2 two-digit numbers.

Prerequisites

Students should already be familiar with

the place value of two-digit numbers,
decomposing two-digit numbers.

Exclusions

Students will not cover

adding on a number line,
using the formal column method to add,
sums over 100.