A (Red Amber Green Extension) differentiated activity on Factors, Multiples and Primes.
Students always start on Red and work their way through.
Answers are free on www.themathsprofessor.com
Here is a free resource for a homework pass! Please use the editable text box for you to put your name. I use HW passes in my classroom as a reward when students get 90 or above on a TEST! Enjoy!