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Remainders

I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?

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Cuisenaire Environment

An environment which simulates working with Cuisenaire rods.

Cogs Environment

Age 7 to 11 Challenge Level:
You can use the interactive environment to explore lots of different ideas including:
  • how cogs turn relative to each other

  • the relationship between the number of teeth on a set of different cogs and full turns

  • how cogs mesh together (how often does the same tooth go into the same gap?)


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