Students use a rectangular array model to develop strategies for decomposing multiplication problems into simpler problems with numbers whose products they already know. By practicing with the array models, students learn and increase their fluency with multiplication facts for 6’s, 7’s, 8’s, 9’s, 11’s, and 12’s.
(1) Make sense of problems and persevere in solving them; (2) Reason abstractly and quantitatively; (3) Construct viable arguments and critique the reasoning of others; (5) Use appropriate tools strategically; (7) Look for and make use of structure.
3.OA3, 5, 7, 9