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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 flower for Yoko
Teacher shows the animation telling what an enlargement is.
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[Single activity]
Enlargement
Teacher asks if the first shape is an enlargement of the given red shape or not. Then, teacher asks about the second shape and so on.
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[Movie]
The enlargement of the tags
Teacher shows the animation telling what a scale factor is.
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[Single activity]
Scale factor
Teacher shows the problem and asks one student to solve the first example of the activity.
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[Movie]
How do we enlarge the shape?
Teacher shows the animation telling how to enlarge a figure. If necessary, teacher pauses and explains in detail.
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[Description]
Definition of enlargement
Teacher helps the students to form the definition of the enlargement. A transformation that changes the size of a figure by a constant factor. The distance of the image of the point from the centre is the distance of a point from the centre multiplied by a constant factor.Students try to form the definition of the enlargement. Write the correct version in notebooks.
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[Description]
Enlarging the triangle
Teacher draws a triangle on the board and asks one (or two) student(s) for drawing enlargement with the given scale.
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[Description]
Summing up
Teacher sums up the lesson.
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