The "In Your Prime" Game is based on The Sieve of Eratosthenes, which is an ancient method of finding the prime numbers. Students will need to understand the rules of divisibility well in order to make judgments about whether the number they have landed on is prime or not. You may want to review the rules of divisibility with them before they begin trying to play this game.
Make sure that kids understand that the yellow and white squares on this gameboard don't have any particular significance. The yellow tint is only a visual device to keep the numbers separated from each other. Therefore, prime numbers could be on a white square or on a yellow square.
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