MAT 351 Lecture Notes - Lecture 8: Disjoint Sets
15 Dec 2016
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Why: as an elementary school teacher you are going to spend a lot of time helping children to understand the meaning of addition, subtraction, multiplication, and division, and helping them to solve problems that involve these operations. In order for a strategy to be considered direct modeling, the action or situation of the strategy has to match the action or situation of the problem, and all quantities in the problem must be represented. Direct modeling: children act out the problem. They model every number and work the problem in chronological order: cognitively guided instruction. Children understand a great deal more about basic number operations than teachers think. Traditionally operations taught in a way disconnected from how children think and solve problems. Cgi is based on the idea that children enter school with a lot of informal or intuitive knowledge. Story problems: each problem has a story a situation or action being described.
