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| Part 5: Reviewing Students’ Methods and Posing Another Problem [Begin: 22:31]
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The teacher reviews and clarifies the students’ methods and asks how many students used each method. Then the teacher presents a follow-up problem, which is to change a quadrilateral into a triangle without changing the area. The teacher puts a figure on the board and says, "This shape of quadrilateral, without changing the area, please try to make it into a triangle. Please think for three minutes and try doing it in your own way." The students work on the problem at their desks, and the teacher walks around the room and assists individual students. After about three minutes, the teacher again tells them to discuss their solution methods with one another. | ||
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