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Count animals to tell if Dotson made a Mystery Math Mistake when representing the number of animals using a 10-frame and writing the number to tell “how many.” Create number towers with “1 more” and “1 less.”

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 Lessons

  • Math Mights - 2nd Grade

    Lesson 208

    Warm up with a Mystery Math Mistake to find the mistake made in counting up on a number line to subtract. Notice and wonder to compare a bar graph and a line plot. Measure your own hand span. Create and use a line plot of hand span data to answer questions.

  • Math Mights - 3rd Grade

    Lesson 208

    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.

  • Lesson 209

    Explore the Multiply by 9 facts by recognizing there is only one new fact: 9 x 9. Compete against characters to see who finds the product first. Play games and use your fingers to practice multiplying. Use multiplication facts you already know to help find the product when one factor is 9.