Your algebra one students will be highly engaged as they practice their Greatest Common Factor factoring skills. Students need to factor binomials or trinomials by writing the polynomials as the product of two factors (one of which will be the GCF). Then, to advance in the circuit, they must hunt for one of their factors. This becomes the next problem. Because they must locate only one of their factors, it makes working backwards from the answers nearly impossible (until the end when there is a "double GCF aka factoring by grouping). The problems get progressively more difficult so it is great for differentiated instruction. Can be turned into task cards, a scavenger hunt or "I Have / Who Has".