Prime or Composite: Using Area Models to Determine Number Types

The video tutorial explains how to determine if a number is prime or composite using area models. It begins by introducing the concepts of prime and composite numbers, followed by a review of area models and common misconceptions about odd numbers. The tutorial then demonstrates how to identify prime numbers by showing that they have only one set of factors, 1 and itself, using the number 5 as an example. It contrasts this with composite numbers, which have multiple sets of factors, using the number 9 as an example. Finally, the tutorial applies these concepts to determine that the number 15 is composite, as it can be represented by more than one area model.

What common mistake do people make regarding odd numbers and prime numbers?

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Describe the difference between the area models for prime and composite numbers.

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