Part 2: Posing the Problem [Begin: 01:26]
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The teacher draws a figure on the board representing two pieces of land, each piece
owned by a student in the class. The boundary is a line bent in the middle. The owners
would like to make the boundary straight without changing the areas of the two pieces
of land. The teacher asks where he should draw the boundary. After a brief question
and answer session to clarify the problem, and several predictions by the students,
the teacher asks the students to work on the problem, "First of all, please
think about it individually for three minutes." |