An initial lesson on the Topic of Reflective Symmetry 1
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An initial lesson on the Topic of Reflective Symmetry 1
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The children in the kindergarten should be in groups of 4-6.
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Do not relate to the exactness of the folds.
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As the children have continued practice with folding they are able to do the folding exactly as needed.
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The key to each symbol on each slide.
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Each child will have one sheet of origami paper.
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It is important only to use original origami sheets as they are flexible for folding.
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Folding instruction: Each child makes one fold on the sheet with the colored side facing him.Every child decides his own fold.
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The folds are made individually according to the choice of the child.
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A discussion question: Open up your fold to the square shape.
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A discussion question: If you fold your sheet on the line do you have two shapes exactly covering each other?
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Using a marker and the measuring tool mark the line on the white side of your sheet.
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Each child will check if his marked line is a line of symmetry for his square sheet.
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Each child colors one shape on the sides of the line and checks whether the two shapes cover each other exactly.
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Explain the concept of symmetry.
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Class activity: Underneath the heading ” a line of reflective symmetry”,”not a line of reflective symmetry”shown on the class board each child will place his sheet with the colored shape and folded line.
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A shape has reflective symmetry when the two shapes on the side of the folding line cover each other exactly. In such a case the line is named a line of reflective symmetry.
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A final question: The kindergarten opens a book in front of the children asking them to find the line of symmetry. Would the book be closed properly if there wasn’t a line of reflective symmetry?
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A poster should be placed in the kindergarten showing the table of their sheets allowing the children to discover other shapes in the environment with a line or lines of reflective symmetry.
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A discussion question: Why is it necessary to have lines of reflective symmetry? Look at different objects around the environment in the kindergarten or in other places.
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- Lesson Topic
Reflective symmetry.
- The activity.
In the different stages of folding the children discover the meaning of the concept a line of symmetry.
- The Model.
A poster of shapes with reflective symmetry and others without reflective symmetry.
- Lesson Aims
The child will identify shapes with reflective symmetry and fold such shapes.
- Lesson Content
Comparison of two shapes created by a line of folding on the square sheet.
