Do your students regularly mix up the difference between "factors" and "multiples". Mine do all the time. This large poster (2'x3') shows gives a basic definition of each term and an example of each. It is ready to have printed out and laminated. It can also be easily resized if it is too large for your needs.If you do not have MS Publisher, buy this poster and send me a message with your email. I can send you a small PDF version. It is great for interactive notebooks.