• The study of Perpendicular Lines and Perpendicular Sides of Polygons.
• Comparison of angle sizes.
• Investigation of angles and  Perpendicular Lines and Perpendicular Sides of Polygons.

A sweet box.

The measuring tool,Composition and Decomposition,Polygons 3,Perpendicular Lines and Perpendicular Sides of Polygons.

In this lesson the pupils will investigate intersection of straight lines,perpendicular lines and perpendiculars sides of Polygons. The model comes as surprise while learning new concepts and revising previously learnt concept.

.The concepts of Angle, Right Angle,Square and Pentagon

Measuring Tool, origami sheets 15×15 cm.

During the folding processes the pupil will relate to perpendicular and parallel lines and segments.

There is no model in this lesson.

According to planned curriculum.

This is a prepatory lesson to the next lesson about parallel and perpendicular lines and segments with the model of a dress. In the lesson the pupils investigate the properties of parallel and perfpendicular lines using  their measuring tool.

The concepts of angle,a right angle and a square.

During the folding process the pupils will identify parallel and perpendicular lines.

A dress.

According to the curriculum.

This is the second lesson on parallel and perpendicular lines following the prepatory lesson on parallel and perpendicular lines-1 1/2. In this lesson will identify aparallel and perpendicular lines in other situations. The final model will be  a surprise for the pupils and at the same time learning new concepts and revising previously learnt concepts.

The concepts of angle,straight angle and square.

Pupils will recognise perpendicular lines and draw perpendicular lines.

The swimming fish.

The measuring tool,Composition and Decomposition of Shapes, Polygons 3,Perpendicular  lines and sides of polygons.

In this lesson the pupils will investigate perpendicular and intersecting lines. At the conclusion of this lesson the final model will be a surprise while learning new concepts and revising previously learnt geometrical concepts.

Angles,right angle,sides of a polygon.

The pupils will identify the following quadrilaterals: Square,rectangle,trapezoid.

Space ship.

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.

The concepts of vertices and  sides of polygons.

• Identify two shapes as congruent after a rotation.
• Identify which shapes  are congruent as a result of reflective or rotational symmetry or both.
• Identify the shapes with rotational symmetry of various orders.
• Identify using activities to identify propeties of symmetry in different shapes.

A puppy

According to the curriculum.

The folding process at different stages enables the pupil to learn about the concept of rotational symmetry together with the concept of reflective symmetry (not formal definitions). On completing the final surprising model the pupil can revise previously learnt concepts and review the new concepts that have been learnt in this lesson.

• Investigating pyramids.
• Investigating the faces,edges and vertices of pyramids.
• Folding envelopes of pyramids.

Envelopes of triangular,square and pentagonal pyramids.

According to curriculum.

Folding and assembling  envelopes of  triangular,square and pentagonal pyramids.Listing faces,edges and vertices of pyramids.

Quadrilaterals and polygons.

5 origami sheets 15cm x15 cm.

Worksheet on the subject of pyramids

• Pupils will investigate measurement by direct comparison and by non-standard units.
• Pupils will compare lengths of a certain object.
• Pupils use the measurement tool as a non-standrad unit for measuring lengths.

A finger snake

According to curriculum.

Origami sheets 15cm x15 cm

Investigate pyramids

• Description of a pyramid, number of faces,edges and vertices.
• Recognition of a triangular pyramid and envelope of a pyramid.
• Pyramids with different bases.

Envelope of a triangular pyramid.

First lesson on the topic of 3-D solids.

Pupils will construct a triangular pyramid, investigate the properties of this pyramid, the envelope of this pyramid constructed from triangles and comparison of  the envelope and the solid.

Polygons and triangles.

Recognizing additional properties of polygons.

No name.

This lesson is for identifying properties of polygons in an investigative activity.

A creative approach to recognizing and folding various polygons without a model.

A full understanding of polygon shapes and congruency.