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May 13, 2020

Understanding one-digit multiplication video

This video follows up on the previous blog post, on understanding multiplication. Put in the time now and get this foundational understanding laid right.

Posted In : , Math at Home
May 13, 2020

Understanding Multiplication Part 1

What does “solve 3 x 8” mean? There are actually two crucial pieces of information to parse for this to mean anything. “x” means “groups of” First [...]

Posted In : , Math at Home
May 8, 2020

Understanding subtraction part 2: multi-digit subtraction

I posted a little while ago about the importance of representations in subtraction. Today, I’m sharing a followup video on how to extend that [...]

Posted In : , Math at Home
May 6, 2020

A math game with its own theme song?!

A teacher named Mark Esch emailed me recently to ask about using one of our classroom games, Horseshoes, in a movie he wanted to make. When he sent it to me, I [...]

Posted In : , Game
May 5, 2020

A meditation on commutativity of multiplication

We’re in the final stretch of the Kickstarter campaign now! The last ten days will determine just how successful the campaign is. Keep spreading the [...]

Posted In : , Kickstarter, Math Musings
May 1, 2020

Free printable Tiny Polka Dot starter deck

I recently committed to donate up to 1000 Tiny Polka Dot games if people could help us find good homes for them. Within four hours of a mass email going out, [...]

Posted In : , Math at Home

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Recent Posts

  • Perils and Promise of EdTech (featuring Prime Climb) December 18, 2020
  • Conjectures are more Powerful than Facts in the Classroom November 12, 2020
  • Our Remote Curriculum August 4, 2020
  • A matter of justice June 2, 2020
  • Understanding one-digit multiplication video May 13, 2020
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