Fractions: Relating Repeated Addition to Multiplication (Grade 4)
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This lesson set provides an introduction to addition and subtraction with like denominators in the same whole, as well as the connection between repeated addition of a unit fraction and multiplication of that unit fraction by a whole number. Students will use representations (pictorial and symbolic) and mathematical reasoning. Students will:
- understand non-unit fractions as a sum or product of unit fractions;
- represent non-unit fractions; and
- prove equivalency of multiplicative expressions involving one fractional factor.
Standards: 4.NF.A.2, 4.NF.B.3, 4.NF.B.3.A, 4.NF.B.3.B, 4.NF.B.3.D, 4.NF.B.4, 4.NF.B.4.A, 4.NF.B.4.B, 4.NF.B.4.C