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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.

Related Standards: MI.Math.Content.1.OA.A.1

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