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| 1. |
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[Description]
Lesson description
Teacher gives the goals of the lesson.
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| 2. |
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[Movie]
The area of a triangle
Teacher shows animation telling how to calculate the area of a triangle.
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| 3. |
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[Single activity]
The formula for the area of a triangle
Teacher reads the rule. Students should write the rule in notebooks.
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[Single activity]
Areas of polygons made of triangles – problems
Teacher shows the problem and solves the first example. Then, teacher asks one student to solve the second example on the whiteboard. The third example each student solves in notebook.
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[Single activity]
Area of a triangle
Teacher shows the problem. Teacher fills in two green gaps and asks one student to calculate the area of the triangle. Then, teacher asks two more students to calculate the areas of other triangles.
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[Description]
Summing up
Teacher sums up the lesson.
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