Math Mights

Add & Subtract Using 20

Week 4, 10, 11, underwater Lesson 204 Math 1st Grade Aired Week of 11/30/2021
Add & Subtract Using 20

Represent a teen number using a number bond to solve a Mystery Math Mistake. Use Notice and Wonder with a marble game to ask and answer questions about adding and subtracting within 20. Use a Double 10-frame & number line to represent and practice adding and subtracting within 20.

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) https://creativecommons.org/licenses/by/4.0/.

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