.The pupils will identify and investigate triangles according to properties

A sweets box.

  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

In this lesson, the pupils will investigate the properties of triangles: three sides and three vertices, identifying them in different forms as a result of folding activities. At the end of the lesson they see the folding leading to a surprise model. During the activities they are learning new concepts and revising those previously learnt.

The pupils will be able to identify and investigate triangles according to sides and vertices.

A mouse.

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

In this lesson, the pupils will investigate the triangular shapes as formed in the folding process. The classification is made according to the number of sides. At the conclusion of the folding process, the final model comes as a surprise.  The pupils learn new concepts and review previously learnt concepts.

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.

Polygon activity 1

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

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

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.

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

A measuring tool for comparison of length

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

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.

Intuitive  identification  of right angles.

The pupils during the folding process will identify polygons according to stated properties. The pupils will learn how to form different polygons with their sheets and investigate the various properties of the folded shapes.

Polygon activities 1/2

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

The decomposing and composing activities allow the children to create various polygons during the folding process and with the combination of several triangular folded shapes. With a series of questions and answers during the folding process the pupils are able to deepen their geometric reasoning in a dynamic environment.

Concepts of sides and vertices in polygons.

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.

A rabbit finger puppet

measuring tool for comparison of lengths ,Polygon activity 3 decomposition and composition 1/2 , Polygon activity 3 decomposition and composition 2/2,   Quadrilaterals B: Square & Rectangle – same and different, Quadrilaterals B: Line of reflective symmetry 1/2 Line of reflective symmetry 2/2, Lines of symmetry in quadrilaterals, Perpendicular line and perpendicular side of poligon, Perpendicular line

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.

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.

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.

.The child decides what the final result is

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

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

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.

The pupils will identify quadrilaterals according to the number of sides.

Space ship.

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

Investigation of different quadrilaterals found during the folding process.  At the end of the lesson, there is a surprise for the pupils.  They learn new geometric concepts and revising previously learnt concepts.

The concepts of sides and right-angles in polygons.

• The pupils will identify the square and rectangle and know the same and different properties of each shape.
• The pupils will fold a rectangle from a square and investigate the lengths of the sides.

An envelope

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

The concepts of vertex, side and polygon

• 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.

Line of reflective symmetry 1/2

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

• 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.

 Polygons.