Post-It Problem: Grades 2-3

If imitation is the purest form of flattery, then Graham should be pretty darned flattered. I imitated (read: stole) his The Big Pad problem for slightly younger grades. Graham’s task necessitates fractions, which was a bit further down the line for my intended audience, roughly grades two or three. In this task, the giant Post-It is 15 inches x 15 inches and the small Post-Its are 3 in x 3 in. Enjoy!

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(Coming soon: a 8 in x 6 in Post-It Problem for grades 4-5, with additional commentary)

Act 1


  • Watch the video. What do you notice? What do you wonder?
  • How many small post-its will it take to fill up the big post-it?
  • What do you know? What do you need to know in order to solve the problem?

Act 2

Post-It Problems 15x15 Act 2.png

Post it Problems Act 2 Post its.png

Act 3