Math Mights

Triangles, Rectangles and Squares

Week 31, 36, shoot-for-the-stars, space Lesson 403 Math 1st Grade Aired Week of 5/10/2021
Triangles, Rectangles and Squares

Let’s explore what makes a shape a triangle, a rectangle, or a square.

Math Mights was adapted from IM K-5 Math™ ©2021 by Illustrative Mathematics®, released under the Creative Commons Attribution 4.0 International License (CC BY 4.0)

Additions and adaptations are ©2021 by Strategic Intervention Solutions, LLC

Visit the lesson page on for additional resources.

Download Full Packet

Download the full year's Math Mights extension activities.

Download PDF