An activity on the Topic: the Same and Different in Quadrilaterals using an imagined model.


Give each child two sheets of origami paper.

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


The children take out their measurement tool.

The lesson on preparing a measurement tool should be given before this lesson.


Folding instructions: Fold parallel sides on one of the square sheets.


The children in the group should put all of their rectangles to form an imagined model.


The children will make their model without intervention and describe their model.


A discussion question: What are the number of sides and vertices on the square sheet and the folded sheet.

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.


Answer: The two polygonsthe square and the rectangle, have the same number of sides and vertices.

The children will understand that quadrilaterals have 4 sides and 4 vertices.


A discussion question: What name can be given to both polygons?


A discussion question: Can you find another property common to both shapes?


Answer: Both the square and rectangle have right angles.

Use the measuring tool to identify the right angles.


A discussion question: In what ways are the two shapes the same and in what ways are the two shapes different?

In relating to lengths of sides use the terms shorter or longer but not smaller and larger.


Answer: All the sides of the square are equal in length and the rectangle has two pairs of sides with different lengths.

מומלץ לבקש מהילדים למצוא את השוני לבד ולבחון עם המודד את אורכי הצלעות.


A discussion question: Which quadrilaterals can you make using all your rectangles and squares?

This activity relates to composition and decomposition using squares and rectangles. Children should do this activity by themselves in anyway they decide.


Folding instructions: With the other square fold opposite sides onto each other. Now there are two rectangular shapes.



Folding instructions: Using only one rectangle fold the longer sides onto each other.


A discussion question: How many sides and vertices does this new rectangle have?


A discussion question: In what ways are these two rectangles the same or different?

In relating to lengths of sides use the terms shorter or longer but not smaller and larger.


Answer: Both shapes are quadrilaterals with 4 sides and 4 right angles. The lengths of the sides are different.

These properties will be discovered by the cjhildren.


Folding instructions: With one of the rectangles fold the longer sides onto each other.


Folding instruction: Fold one of these rectangles as shown.


A discussion question: In what ways are these two rectangles the same or different?

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.


Answer: Both shapes are quadrilaterals with 4 sides and 4 right angles. The lengths of the sides are different.


Folding instruction: On only one rectangle fold parallel sides as shown.


Folding instruction:On both rectangles fold parallel sides as shown.


Folding instruction: On both shapes fold 2 vertices as shown.


Folding instruction: Place your finger inside the shown rectangle.


Each child should decorate his own model and describe his model.


Each child should decorate his own model and describe his model.


Each child should decorate his own model and describe his model.

The children can prepare a play with their models.

 Lesson content
Quadrilaterals the same and the difference between them.
 Lesson Aims
Recognizing properties of quadrilaterals(rectangles) with different sizes.