What is a Prime Number?

The video tutorial explains how to find factor pairs of the number 13 using area models. It demonstrates arranging 13 squares in different ways to identify factor pairs, concluding that 13 has only two factors: 1 and 13, making it a prime number. The concept of prime numbers is further illustrated with examples of other prime numbers like 5, 11, and 17. The lesson aims to help students identify prime numbers by understanding their unique factorization.

What is the first factor pair of the number 13?

• 5 and 8

• 1 and 13

• 2 and 6

• 3 and 4

Why can't 13 squares be arranged in two equal rows?

• Because 13 is a prime number

• Because 13 is a perfect square

• Because 13 is an odd number

• Because 13 is too large

What defines a prime number?

• A number with only one factor

• A number that is even

• A number with more than two factors

• A number with exactly two factors

Which of the following numbers is a prime number?

• 20

• 11

• 15

• 9

What did you learn in this lesson?

• How to identify prime numbers

• How to divide numbers

• How to multiply numbers

• How to subtract numbers