How does this text recommend building conceptual understanding of addition? Why is this approach recommend?
What will be an ideal response?
The direct instruction strategies recommended in this text use lines as semi-concrete objects to represent the members of sets. Drawing lines graphically demonstrates equality (the same number of lines are on both sides of the equal sign). Teachers can more readily monitor student performance on written work because the lines provide a written record of student performance. This makes diagnosing errors easier.
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