This is a complete lesson with tips and tricks for understanding and memorizing the multiplication facts for 9 and the Associative Property of Multiplication. It is based on fact family triangles and includes a systematic timed flash card practice for fluency, a quiz to check for understanding, and a competitive game to get the whole class excited. It can be used flexibly for teaching or practice, and the slides can even be printed for centers or independent practice. Suitable for grade 2, 3, 4, 5, 6, 7, 8, 9,10,11, 12, adult, special ed., EL, GATE. Correlates to CCSS Common Core Standards 3.OA.4, 3.OA.5, 3.OA.6, 3.OA.7, 3.OA.9 and conforms to the EDI, Explicit Direct Instruction, teaching model.