Lesson Materials

Extension Activity

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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

Math Mights - 3rd GradeEquivalent Whole Numbers as Fractions
Math Mights - KindergartenMore or Fewer

Related Lessons

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    Lesson 208

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    Warm up with a Mystery Math Mistake to find the error in DC's addition. Use different strategies to subtract including counting back and the connection between addition and subtraction. Use a number line to help count on to find a difference.

  • Math Mights - 2nd Grade

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  • Math Mights - 3rd Grade

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    Warm up with a Mystery Math Mistake to hunt for the mistake made counting up on the number line. Use place value cards to practice rounding numbers to the nearest ten and hundred.