top of page
Image by Chris Liverani

MathBait™ Multiplication

Red Light, Green Light

Share this resource!

Practice factoring in this light-hearted ticketing game helping students to identify when all factors have been found.


Resource Type

Warm Up

Primary Topic

Primes & Factoring







In the previous lesson Factor It, students found they could identify all the factors of a number without writing a large, cumbersome list. In this warm up, students play red light, green light to decide when they have identified all the factors.

Place students in pairs. Students will take turns factoring with their partner. Student A will be assigned a number to factor, Student B will act as the traffic monitor. As Student A begins factoring, Student B will pay close attention. After writing each factor pair, Student B will announce "red light" (meaning to stop) or "green light" (meaning to continue).

If Student A misses a factor (runs a light), Student B will give them a ticket. If Student B announces the wrong light color, Student A will give them a complaint. When one number is factored, students will swap places. The student with the fewest slips (both tickets and complaints) will win.

This warm up allows students to continue to practice factoring while keeping in mind the markers to look for to know when factoring is complete.

The material on this page is copyrighted by MathBait™. Please use and enjoy it! MathBait™ provides a temporary license for Non-Commercial purposes. You are not permitted to copy, distribute, sell, or make derivative work without written permission from MathBait™. 

Tell us what you think!

Click to rate this activity

© MathBait®
bottom of page