Lesson Plan: Adding by Counting On: Numbers up to 20 Mathematics • 1st Grade

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


Students will be able to

  • count forward from one addend in 1s to find the total,
  • use the counting on strategy to add two one-digit numbers within 20,
  • identify the largest number in an addition sentence and count on from there.


Students should already be familiar with

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


Students will not cover

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

Download the Nagwa Classes App

Attend sessions, chat with your teacher and class, and access class-specific questions. Download the Nagwa Classes app today!

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.