1. A colorful way to find the factors of given numbers
Factor Rainbows
A colorful way to find the factors of given numbers

2. Some important Definitions!
Factor - a number that is MULTIPLIED to get a given product
Product - the answer to a multiplication problem

3. So you've been given a number
Let's go with twenty

4. Making Rainbows Always start with 1 and the number itself
Connect the numbers with a rainbow arc

5. Work your way up from left to right getting bigger
So after 1 comes 2
If it's an even number

6. Connect these with another rainbow arc
2x10=20
Connect these with another rainbow arc

7. You may have noticed As you work your way from right to left...
The numbers get smaller
Working your way to the middle until you run out of numbers

8. After 2 comes 3
But 3 is not a factor

9. Write them down; Draw the arc
Moving on up to 4
Yup, 4x5=20
Write them down; Draw the arc

10. There is no number between 4 and 5
So you are done!!!

11. So this is your factor rainbow for 20
The factors of 20 are...
1, 2, 4, 5, 10, & 20