Tag Archives: puzzles

Dots in a Square from Math Without Words

Recently, my third grade class and I have fallen in love with Math Without Words by James Tanton. This is a delightful collection of math puzzles, ranging in difficulty from fairly easy to quite hard, but all mathematically beautiful. Occasionally, … Continue reading

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Avoid Hard Work! – A book for problem-solvers of all levels (toddler to mathematician)

It is the beginning of winter break and the family is off to a vacation.  The car ride ahead is many hours.  Ten minutes into the drive, Katie (8 years old) realizes that she forgot her book.  In desperation, she … Continue reading

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Fun Math Festival

[This is a guest post made by my sister, Yulia Shpilman, about the awesome math festival that she organized last weekend.] So I finally did it!  I organized a math festival (thank you to Jane Kats for her inspiration and … Continue reading

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Kid in the Machine

A few weeks ago, we had a lesson on one of my favorite topics to have little kids play around with – functions!  When covering this topic with little ones, a very important first step is to create a cool … Continue reading

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Katie the logician

Yesterday, Katie came up with her own, consistent logic puzzle!  This is how it happened (with the puzzle, of course). I was flipping through Alice in Puzzle-Land by Raymond Smullyan, which had just arrived in the mail.  Naturally, she asked … Continue reading

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Counting Rectangles

This week we continued playing with rectangles, but this time we were counting them.  This can be more tricky than it sounds.  I started the lesson by drawing a single rectangle on the board.  The kids all agreed that there … Continue reading

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Pentaminoes

Last Sunday at the Golden Key Russian School, we did a fun and engaging activity involving pentaminoes.  Pentaminoes are shapes made out of five squares connected along edges.  There are 12 of them up to rotations and reflections: These shapes … Continue reading

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