This product was created to teach (or give practice) finding the greatest common factor of two numbers in a systematic way.
An example is provided on the worksheet for the students to refer to.
The method is finding pairs of factors starting with 1x..., then (if appropriate) 2x...
Once all of the factor pairs have been found for both numbers, the student looks at the largest factors of both numbers and find the largest common factor.
This product was created by Susan M. Walker.