Properties of shape - Count vertices and 2D shapes - Presentation

In a comprehensive lesson about the properties of 2D shapes, students focus on identifying and counting vertices. The term 'vertices' is explained as the corners or points where two or more edges meet on a shape. Through a series of engaging activities, students are encouraged to match various 2D shapes with the correct number of vertices, ranging from three to six. For example, they are asked how many vertices a triangle has, prompting them to apply their knowledge and count the corners of the given shapes. The lesson is interactive, with opportunities for discussion and questions such as "What are 'vertices'?" and "Can you show me on a shape?"

Further activities challenge students to colour shapes with a specific number of vertices and complete tables that connect the shape name with its number of vertices. For instance, they learn that a pentagon has five vertices, while a rectangle and a square both have four. The lesson also includes reasoning tasks where students are asked to put shapes in order based on the number of vertices and to predict the vertices in a pattern. The activities are designed to foster critical thinking, with questions like "If my shape has ___ vertices, what could my shape be?" and "What couldn’t it be?" By the end of the lesson, students should be able to confidently identify and count vertices on a variety of 2D shapes.