# Triangles activity B

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

**Name of Model**A mouse.

**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 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.

**Prior Knowledge**

**Stages in the curriculum**

**Materials**- Origami sheets 15 cm x 15 cm-2 per pupil