Expansion of the lesson


Main questions by teacher

and anticipated students' responses

Remarks on teaching

  1. Japan is well known as the green islands, which means very rich country in forest. Do you think it is true with following data?

Forest area in Japan 247282 sq. km

Forest area in U.S.A 2651880 sq. km

Forest area in France 145940 sq. km

  • Japan doesn't have the largest amount of forest.
  • Since Japan is a small country, most of the land in Japan may be forest.

  • Let students understand that the data are not enough to think about the problem.

  1. Do Japanese people have the enough forest? Compare 3 countries' data and decide the order of three countries by amount of forest.

  • Give students all the data of three countries.
  • Data should be shown in the worksheet.

  1. Let students solve the problem individually.

  • Compare students' solution and find the ideas behind their solutions.
    1. Japan #1, U.S.A #2, France #3.

      Forest area per total area:

      Japan 68%

      U.S.A 29%

      France 27%

    2. U.S.A #1, France #2, Japan #3.

      Forest area per person:

      U.S.A. 12000 sq. km

      France 2800 sq. km

      Japan 2100 sq. km

      • There should be other solutions.

    • It is very important for all students to understand the process to get each solution and the reasons why the different solutions come up through the students' discussion.

    1. Teacher sums up all the ideas that students used to solve the problem

    • Let each student write short journal about what he / she learned through this lesson.

    Note; This expansion of the lesson should be based on a typical organization of the Open-Ended Problem Solving.