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2.NBT.A.3 Lesson Plans
Our Take:Second graders should be learning to represent numbers up to 1000 in a variety of different forms. For example, the student can represent the number 42 using place value terms (4 tens and 2 ones), expanded form (40 + 2), its number word (forty-two), and its standard form (42).
These lesson plans can help students practise this Common Core State Standards skill.