EDEE 230 Chapter Notes - Chapter 11: Decimal Mark, Procedural Knowledge, Dime (United States Coin)
9 Sep 2013
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Many need to use an object or fingers to keep track. Easy to attach words to materials & groups without knowing what they represent. Objective: help children integrate grouping by tens concept with what they already know about numbers from counting by ones can"t tell them it will be the same, they must construct it themselves. Way we say numbers is connected with groupings by ten concept. Argued base-ten language (5 tens and 3) should be used throughout grade 2. Way we write numbers should be coordinated with grouping scheme. Non-proportional models used with children who already understand base-ten; use money to represent . 57. Get students to count in groups other than tens how could we count our shoes in some way that would be easier than counting by ones? . Have students estimate groups of tens and ones. Hard for children to understand that one individual objects is the same as one, singular ten.
