Lesson plan

Add and subtract fractions and mixed numbers with like denominators using number lines

teaches Common Core State Standards 4.NF.B.3.a http://corestandards.org/Math/Content/4/NF/B/3/a
teaches Common Core State Standards 4.NF.B.3.c http://corestandards.org/Math/Content/4/NF/B/3/c
teaches Common Core State Standards 4.NF.B.3.d http://corestandards.org/Math/Content/4/NF/B/3/d

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