Japanese Lesson 1
Areas of Triangles

Part 2: Posing the Problem [Begin: 01:26]





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."

 

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