# Category Archives: Uncategorized

## Isometric graph paper and 3D pictures

Translated from this post by Jane Kats. At our math festivals and during Mousematics lessons we actively use isometric graph paper, aka “triangular grid paper”.  Sheets with a triangular grid can be downloaded on our site here in the free downloads … Continue reading

## Fun with pentacubes

Today we started a unit on geometry with the second graders.  The first activity had them explore how many different structures can be made out of 4 snap cubes.  They very quickly came up with the five tetrominoes: After a … Continue reading

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Funville Adventures, our math-inspired fantasy adventure with Allison Bishop, is officially published! It is available on amazon and directly from Natural Math, where you can read more about the book. Here are some early reviews of the book: “You too … Continue reading

## Counting crocodile legs

Katie, at nine years old, rarely asks me to give her math problems.  She always has a lot on her mind and gets plenty of problems from school and other math-related activities (interesting problems do sometimes come up spontaneously in … Continue reading

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Translated from this post by Jane Kats. Recently, at our math lessons with 5-6 year olds, we were … threading beads. Actually, we were making very simple abacuses. We were putting 5 light beads and 5 dark beads on a … Continue reading

## Playing Broken Telephone

What follows was translated from this post by Jane Kats.  The game described was played by children ages 5-6, but I feel that a variation of it could be fun for older kids, or even adults.  Ideas? When I was … Continue reading

## Drawing heads, tails, knees, and toes – useful?

Drawing a useful picture or diagram is an important problem-solving skill.  From teaching different groups of elementary school children, I have noticed that some students are very reluctant to draw anything whereas others will draw elaborate pictures with lots of … Continue reading

## A math-inspired love story in verse

For post #100 on this blog I wrote a poem.  This is post #200 and I decided to start a tradition. This is a poem written jointly with Allison Bishop.  It is an epic love story.  Math is involved.  The … Continue reading

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## A figure with pointy things and a line, a line, and a line

Look at the title.  Did you guess that this was a description of an acute triangle? This description was from a student in my third grade class.  Let me assure you, this student knows how to recognize an acute triangle … Continue reading