A Study about students' interaction in a cooperative solution process

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The study is intended to observe the process when children solved a problem without a teacher interactively. I divided university students, high school students, junior high school students, primary schoolchild into groupuscule, and showed a mathematical problem and real life problem in each group and directed them to solve problem cooperatively. I investigated a problem solving process of the mathematics in ten groups in total in the first year. I investigated the solution of the problem of the daily life scene in six groups in total in the next year. In the process with a mathematical problem, I was able to derive various approach of the agreement to reach. In addition, a problem solving process with real life was changing the condition setting and the policy of solution and the criterion solution, and that process was activity to do a revision/improvement. Such an activity is necessary for the action that aimed at "the scholastic ability to contribute in a group cooperatively".