Quadrilaterals activities 3,4


Each pupil chooses 2 sheets of origami paper. Have your measuring tool ready.


Discussion question: What is the name of this shape? What are the properties of the shape?

The pupils relate to what is special about this shape.


Answer: This polygon is a square. This shape has 4 equal length sides and 4 right angles.

The answer should be given only after the class discussion.


Folding instructions: Fold 2 opposite vertices.

The teacher should not touch the foldings of the pupils.


Activity and question: Each pair of pupils will compose different quadrilaterals with their 2 triangular shapes. Sides of the same length must be fully joined. Which quadrilaterals can be composed? What are their properties?

The triangles should be put together using the whole sides of the triangles.


Answer: Square4 equal length sides and 4 right angles.
Parallelogram – 2 pairs of opposite sides equal in length.

The answer should be shown only after the quadrilaterals have been composed by the pupils and stating their properties. The measuring tool is to be used to measure sides of equal length and also the right angles.


Folding instructions: Fold two vertices as shown.

The teacher should not touch the foldings of the pupils even if the foldings are not exact.


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


A discussion question: Which quadrilaterals can you identify? Explain.

It is suggested that each pupil should do the investigation and identification using his measuring tool.


Answer: Square4 equal length sides and 4 right angles.
Trapezoid– only one pair of parallel sides.

This question may be difficult for some pupils especially in the identification of the trapezoid.


Folding instructions: Fold opposite vertices as shown.


Folding instructions: Open one of the triangles.

Ensure that the pupils open only one of the triangles.


Folding instructions: Turn over your shape.

This activity should be checked.


Folding instructions: Fold two of the shape sides towards the line of symmetry as shown.

The teacher should not touch the foldings of the pupils even if the foldings are not exact.


A discussion question: Which quadrilaterals can you identify in the folded shape?

This is a challenging question. It is possible to move on to the next activity without relating to this question.


Answer: Two different quadrilaterals can be found.
In the folded shape we can find a square with 4 equal side lengths and 4 right angles and a trapezoid with only one pair of parallel sides.

Sress the fact that both the square and trapezoid are quadrilaterals. The trapezoid here is only one of a larger group of trapezoids.


Folding instructions Turn over the shape.

This activity should be checked.


The space ship can now be launched! Fill it with fuel!


A discussion question: Which shapes can be identified in the space ship?

It is recommended that each pupil should try and identify the different shapes. It is possible to show the shapes immediately.


Answer: In the space ship we can identify the following quadrilaterals.
4 right angled trapezoids,
2 isosceles shaped trapezoids,
3 rectangular shapes.

This is a challenging question. It is possible to move on to the next activity without relating to this question.


Folding instructions: The space ship needs fuel. Turn it over for fuelling.


Folding instructions: Fold the vertice to the opposite side as shown.


Let us fuel the space ship engine.


Did you know that a spave ship uses two types of fuelliquid fuel and solid fuel.
 Lesson Aims
The pupils will identify the following quadrilaterals: Square,rectangle,trapezoid.
 Name of Model
Space ship.
 Lesson Structure
In this lesson the pupils will investigate through folding different quadrilaterals and their properties. The final shape will be a surprize for the pupils.While folding the pupils will learn new concepts and revise previously learnt concepts.
 Prior Knowledge
The concepts of vertices and sides of polygons.
 Materials
Origami paper 15/15 cm.