Let’s use a Rekenrek to represent numbers 11-19 and write equations.
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.A.3, MI.Math.Content.K.CC.B.5, MI.Math.Content.K.NBT.A.1, MI.Math.Content.K.OA.A.1
