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Common Core: Math
- Module 4 builds on students’ work with teen numbers to now work within 40. Working within 40 helps students focus on the units, tens and ones, which can be easily modeled pictorially and concretely...
- Topic B extends students’ use of counting sequences and understanding of tens and ones to numbers up to and including 120. In Lesson 3, students apply their understanding of tens and ones to two-...