Lesson Plan: Adding Numbers up to 20 on a Number Line | Nagwa Lesson Plan: Adding Numbers up to 20 on a Number Line | Nagwa

# Lesson Plan: Adding Numbers up to 20 on a Number Line Mathematics • 1st Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use a number line to add numbers up to 20 by counting on from a given number.

#### Objectives

Students will be able to

• model the addition of numbers within 20 on a number line,
• write addition equations matching number lines,
• use a number line to count on and find a sum within 20,
• count on from either addend using a number line and express a preference,
• identify the largest number in an addition sentence and count on from there on a number line to find the sum.

#### Prerequisites

Students should already be familiar with

• counting to 20,
• counting objects to 20,
• reading and writing numbers to 20,
• adding numbers up to 10 by counting on.

#### Exclusions

Students will not cover

• adding numbers with a sum greater than 20,
• adding by making 10.