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| Part 3:
Posing and Working on the Problem [Begin: 10:00]
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The teacher writes the following system of equations on the chalkboard: (2y-5)/9=5(x-1)/6-5y and (3x+1)/12=(8/3)(y-2)+33x/2. After giving students a minute to think about the problem, he asks for students to volunteer suggestions on how to proceed. Students take turns coming to the board to work on the problem, taking questions and advice from their peers and the teacher. After about ten minutes working together in this way, the teacher asks students to record the partial result in their notebooks and continue solving the problem. He gives them about five minutes to find the solution. | ||
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