Need to offer a better way to understand the concept of division and remainders? Try it in the sandbox!

The Discovery Toys  are proportional, so they allow a really engaging way to see how division and remainders work.

This video shows how you can help kids put together the numbers 9, 4 and 1 to “see” division at work:

You can also do this in the bathtub or pool. And the are perfectly weighted and “massed” so they float.

I think this has something to do with “water displacement,” but I’m not sure. I’m a mathematician, not a physicist. 🙂

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