Study of factors links Topics A and B; Topic B extends the study to division. Students understand division as an unknown factor problem, and relate the meaning of unknown factors to either the number or the size of groups (3.OA.2, 3.OA.6). By the end of Topic B students are aware of a fundamental connection between multiplication and division that sets the foundation for the rest of the module.
Grade 3 Mathematics Module 1, Topic B, Overview
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