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Use a 10-frame and Rekenrek (counting buddy) to tell if Dotson made a Mystery Math Mistake building “one less.” Represent objects from a story with a Rekenrek to tell which has “more.” Represent numbers using 10-frames to tell which has “more.”

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.K.CC.B.5, MI.Math.Content.K.CC.C.6, MI.Math.Content.K.CC.C.7

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