Autumn Multiplying 6×7, 7×7, 8×7, etc.

Autumn and I explore multiplying 6×7, 7×7, 8×7, etc. using unit math, that is, by starting with the conversion “6 sevens = 42 ones” and using that conversion to understand 7 sevens, 8 sevens, and so on. This video shows the power of unit math thinking and why Eureka Math’s PK-5 curriculum is called, “A Story of Units.”

At the end of the video, we just go crazy and figure out some multiplications and divisions just for fun! Enjoy Autumn’s struggles and cute expressions throughout.

CHANNEL: Growing Up With Eureka
© 2015 Autumn Baldridge and Scott Baldridge
Supported by NSF CAREER grant DMS-0748636

About Scott Baldridge

Distinguished Professor of Mathematics, LSU. Geometric topologist: gauge theory, exotic 4-manifolds, knot theory. Author: Elementary Mathematics for Teachers.
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5 Responses to Autumn Multiplying 6×7, 7×7, 8×7, etc.

  1. Pingback: Learning to Multiply, Part I | Scott Baldridge

  2. Pingback: Multiplying by 9 | Scott Baldridge

  3. Pingback: Fluency without Equivocation | Scott Baldridge

  4. trinease says:

    great job autumn and Scott


  5. Pingback: Learning Division Facts: Numbers that are Products of Two 1-digit Numbers | Scott Baldridge

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