Properties of Shape - Triangles - Presentation

In an interactive presentation about the properties of triangles, students are encouraged to explore and identify different types of triangles, as well as to discuss and describe their unique characteristics. The lesson begins with a challenge for students to name as many triangles as they can and describe the properties of at least one. This serves as a recap of their existing knowledge. They are then presented with a series of triangles and asked to label them as isosceles, scalene, or equilateral. Additionally, students are prompted to consider whether any of the triangles presented could also be categorised as right-angled, further deepening their understanding of the shapes' properties.

Following the initial activity, the lesson moves on to a more detailed examination of the differences and similarities between the triangles. Students learn that an isosceles triangle has two equal sides and angles, a scalene triangle has no equal sides or angles, and an equilateral triangle boasts three equal sides and angles. Practical activities include drawing these triangles using a ruler and investigating the properties of each shape. The lesson also includes reasoning exercises, such as calculating the perimeter of an equilateral triangle within a square and exploring the possibility of constructing an equilateral triangle with six straws. Through these activities, students not only reinforce their knowledge of triangle properties but also practice their skills in geometry and logical reasoning.