## Grade 3

#### Polygon activity 3 decomposition and composition 2/2

**Lesson Aims**The pupils will fold and identify shapes according to their properties.

The pupils will use paper folding in order to make geometric shapes and investigate their properties.

**Name of Model****A rabbit finger puppet**

**The lesson structure**Triangles activity A, Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 , Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Line of reflective symmetry 1/2, Line of reflective symmetry 2/2, Quadrilaterals C: Square & Rectangle , Lines of symmetry in quadrilaterals, Translation of shapes

**Lesson content**In this lesson the pupils investigate polygons that are formed during the folding process. There is a surprise at the end of the lesson. The pupils learn new concepts and refresh their previous learning.

**Prior knowledge**If during the folding process there are cases of inexact folding by some of the pupils, then these cases will be used to identify differences between the polygons and their properties. The pupils will also learn the concept of polygon sides and vertices.

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#### A measuring tool for comparison of lengths

**Lesson Aims**The pupils will use the measuring tool for comparison of lengths and identification of right angles.

**Name of Model****A measuring tool for comparison of length**

**The lesson structure**Triangles activity A, Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 , Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Quadrilaterals C: Square & Rectangle Line of reflective symmetry 1/2, Line of reflective symmetry 2/2, , Lines of symmetry in quadrilaterals, Translation of shapes

**Lesson content**Pupils will identify right angles intuitively using the measuring tool.

Pupils will identify right angles in various orientations.

The measuring tool should be folded and kept in the pupils workbook at the conclusion of each lesson.

**Prior Knowledge**Intuitive identification of right angles.

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#### Quadrilaterals activities 3,4

**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.

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#### Line of reflective symmetry 1/2

**Lesson Aims**- To identify a line of reflective symmetry.
- To discover the properties of a reflective line of symmetry in a given shape.
- To find a line of symmetry in a given shape.

**Model Name**Line of reflective symmetry 1/2

**Lesson structure**Triangles activity A, Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 , Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Quadrilaterals C: Square & Rectangle, Line of reflective symmetry 1/2, Line of reflective symmetry 2/2, , Lines of symmetry in quadrilaterals, Translation of shapes

**Lesson content**- This lesson is the first lesson about the concept of reflective symmetry. There is no final model and its contents are preparation for the following lesson whose model is at the core of the topic of symmetry.

**Prior knowledge**Polygons.

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#### Line of reflective symmetry 2/2

**Lesson Aims**- To identify a line of reflective symmetry.
- To discover the properties of a reflective line of symmetry in a given shape.
- To find a line of symmetry in a given shape.

**Model Name**A heart of symmetry

**Lesson structure**Triangles activity A, Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 , Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Quadrilaterals C: Square & Rectangle, Line of reflective symmetry 1/2,

**Line of reflective symmetry 2/2**, Lines of symmetry in quadrilaterals, Translation of shapes

**Lesson content**This lesson is the second lesson about the concept of reflective the symmetry. pupils will investigate the reflective symmetry, during the process of folding the hart

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#### Lines of symmetry in quadrilaterals

**Lesson Aims**- To identify a line of reflective symmetry.
- To find a line of symmetry in a Quadrilaterals.
- Students will create shapes in mirroring by paper folding activity

**Model Name****A child and puppy**

**Lesson structure**Triangles activity A, Triangles activity B , Polygon activity A, Polygon activity A, Polygon activities B 1/2 , Polygon activities B 2/2 , Polygon activity C , A measuring tool for comparison of lengths , Quadrilaterals A , Quadrilaterals B: Square & Rectangle – same and different, Quadrilaterals C: Square & Rectangle, Line of reflective symmetry 1/2, Line of reflective symmetry 2/2,

**Lines of symmetry in quadrilaterals**, Translation of shapes

**Lesson content**In this lesson, pupils will investigate the symmetry lines in Quadrilaterals during the process of the folding the model

**Prior knowledge**symmetry lines, polygon

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#### Perpendicular line and perpendicular side of poligon

**Lesson Aims**- 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.

**Name of Model**A sweet box.

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

**Lesson Content**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.

**Prior knowledge**.The concepts of Angle, Right Angle,Square and Pentagon

**Materials**Measuring Tool, origami sheets 15×15 cm.

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#### Perpendicular and parallel straight lines 1 1/2

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

**Name of Model**There is no model in this lesson.

**The Lesson Structure**According to planned curriculum.

**Lesson content**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.

**Prior Knowledge**The concepts of angle,a right angle and a square.

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#### Perpendicular and parallel straight lines 2 2/2

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

**Name of Model**A dress.

**The Lesson Structure**According to the curriculum.

**Lesson content**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.

**Prior Knowledge**The concepts of angle,straight angle and square.

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#### The envelope of a triangular pyramid

**Lesson Aims**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.

**Model Name**Envelope of a triangular pyramid.

**Lesson structure**First lesson on the topic of 3-D solids.

**Lesson content**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.

**Prior knowledge**Polygons and triangles.

The envelope of a triangular pyramid

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