Use as an introduction or recap on lessons on quadratics. Discuss with students how to best choose factor pairs. Encourage students to check their chosen factors, as demonstrated in the clip.

Quadratic close quadraticDescribing an expression ... Start by listing all the factor pairs of 12. These are 1 and 12, 2 and 6, and 3 and 4. 1 add 12 equals 13 and 2 add 6 equals 8, so these ...