Illuminations: Building Sets of 19 and 20

Students explore sets of 19 and 20.

They count up to 20, construct and decompose sets up to 20, and record the decomposition.


*Requires membership to access lesson plan.

Math Topics
Number Values & Counting
Early Childhood, K-6, Educator
Preschool, Kindergarten

What are you looking for?


Illuminations (National Council of Teachers of Mathematics)

Website URL

Type of Resource

Lesson Plan

Assigned Categories