Important: This activity is in my Fantastic Strategies to find Prime and Composite Numbers from 1 to 100.
In this sort, students first label the 4 Magic Prime Numbers (2,3,5,7) and the Special Number 1.
For the rest of the numbers: Students ask the 3 questions. If the answer is yes, place that number in that category. The first 3 columns are composite numbers. If the answer is no to all 3 questions, the number is Prime.
This integrates divisibility laws with the sort activity.
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