1. Prime Time 1.1 Finding Proper Factors
Play the Factor Game once with a partner. Take turns making the first move. Look for moves that will give you more points than your opponent.
Record your “First Move” scores in a T-Chart
As you play, write down any strategies or patterns that you find.

2. Double Check
How can you test to determine whether a number is a factor of another number?
If you know one of the factors of a number, can you find another factor?

3. Question
What is the term for a number that has many factors?

4. Composite!
A composite number is a number that has more than two factors.
What is the term for a number that has only two factors?

5. Prime! A prime number has only two factors!
Can you think of examples of prime numbers?
Is the number 1 prime?
Is the number 9 prime?

6. Copy T-Charts and solve.
Check your work with factor pairs!
Circle all prime numbers and box composite numbers.

7. Homework
On a sheet of notebook paper, draw and solve Factor Pair T-Charts for the following numbers:
10, 12, 15, 28, 30, 39, 42, 48, 60, 72, 80
Remember: Include all factor pairs! Use your “Double Check” methods!

8. The Product Game! Factor x Factor = Product Think: Factor Pairs
Remember:
Factor x Factor = Product