A initial lesson making an imagined model. Polygons 2


The children in the kindergarten should be in groups of 46.


Do not relate to the exactness of folding done by the children.

As the children have continued practice with folding they are able to do the folding exactly as needed.


The key to each symbol on each slide.


Give each child two sheets of origami paper.

It is important only to use original origami sheets as they are flexible for folding.


Folding instructions: Fold opposite vertices with both sheets.

It is suggested that the children will first put the opposite vertices on each other and only after this to press the fold with their finger “travelling” along the fold.The fold should be demonstrated before the children begin to fold. Do not help children or touch their paper.


The folding is demonstrated by the kindergarten teacher and if necessary demonstrated several times.

Confidence with folding is gained by the children without intervention.


A group activity:The children should put their triangular shapes together forming a shape based on their own imagination.


The children should be encouraged to describe verbally their joint effort.

Encouraging children to describe their imaginative shape allows the kindergarten teacher to ask relevant questions about the construction. If the children say that they have made “mountains” with their shapes they can be asked in which place does the climbing begin.


The verbal description of the construction should be attempted by each child in the group activity.

Each individual child should describe his own model.


A discussion question: Ask the children to describe their triangular shape and count the number of sides and vertices.

Children should choose a vertex to begin their “journey” around the shape changing the direction of movement at each vertex until returning to the starting point.


Composition and decomposition: Each pair should join four folded triangles to form a new shape. Only the complete equal sides should be joined.

This activity demands that joined sides must fully fit each other.


The children classify their new shapes according to the number of vertices and sides. A six sided figure is named a hexagon.A five sided figure is named a pentagon.A four sided figure is named a quadrilateral sometimes a square,rectangle, trapezoid or parallelogram. The three sided polygon keeps the name triangle.


Folding instructions:On one of the triangles fold opposite vertices as shown and open the fold.


Folding instructions: Fold two vertices to the marked vertex.

In demonstrating each fold the three stages should be stressed. 1.Listen to the instruction. 2.Understand what this fold means. 3. After these stages perform the fold.


Folding instructions: Fold two vertices to the line of symmetry as shown.

Demonstrate with your shape without any intervention.


A discussion question: Which polygons can you find in the new shape?

Allow the children to find the various polygons and describe them according to the number of sides and vertices.


Folding instruction: Fold the two triangles.

Demonstrate with your shape without any intervention.


Folding instruction:Fold the two triangles as shown.


Folding instruction: Place your finger and press on the vertex as shown.

Demonstrate with your shape without any intervention.


The Model:Each child can decorate his shape according to his imagination.

Use only markers and not stickers.Do not decorate your shape before the children decorate their shape.


הצגת הדגם: Children describe verbally their decorated model.

It is important that each child has the opportunity to describe verbally his own decorated model.


Each child shows and decribes his model.

It is important that each child has the opportinity to describe verbally his own decorated model.


Each child shows and decribes his model according to his imagination.

Use only markers and not stickers.Do not decorate your shape before the children decorate their shape.

 Lesson Topic
Polygons
 Description of the Activity
This activity demonstrates the different stages of folding and investigating the polygons formed with the folding.
 Name of Model.
Each child decides the name of the model.
 Lesson Content
Three stage in this activity:
 Forming new shapes with triangles.
 Composition and decomposition of shapes.
 Folding stages in identification of polygons.