Did you know that Illuminations has some games that students can play on iPads®, Chromebooks™, tablets, and even their phones?
The Factor Game allows students to practice their multiplication and division fact families while strategizing about prime, perfect, abundant, and deficient numbers. In The Factor Game, students take turns selecting numbers from the board. Once students pick a number, their opponent selects all the available factors of that number. Their total points are the sum of all the numbers they have selected. For example, 6 is not such a good selection because 6 has 3, 2, and 1 as its factors and 3 + 2 + 1 = 6. Students and their opponents get the same score! That's why 6 is called a perfect number. The number 12 is an even worse choice. If students pick 12 on their first turn, their opponent gets 1, 2, 3, 4, and 6; 1 + 2 + 3 + 4 + 6 = 16. That's why 12 is called a deficient number. Abundant numbers are the key to winning The Factor Game. Can your students find the best moves? If they enjoy playing against the computer, they might also like to play Factor Dazzle against other students on NCTM's
Calculation Nation.

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