Perimeter and Area - Measure Perimeter - Presentation

The presentation on measuring perimeter is designed to enhance understanding of this fundamental geometric concept. It starts with a discussion prompt, asking students to recall what perimeter is, setting the stage for the lesson's focus. The objective is clear: to measure the perimeter of various shapes, primarily rectangles. Initially, the presentation guides students through the process of calculating the perimeter of rectangles without given side measurements, introducing them to the formula 'Perimeter (rectangle) = 2 (length + width)'. This formula is then applied to specific examples with side lengths provided in both centimetres and metres, allowing students to practice and consolidate their understanding of calculating perimeter in different units of measure.

Further activities challenge students to measure the perimeter of other shapes, emphasizing the concept that the perimeter is the sum of all the sides of a shape. The presentation provides examples with sides of different lengths, prompting students to perform the necessary additions to find the total perimeter. Additionally, there's an activity that involves doubling the size of a shape using dot paper, which leads to an exploration of how the perimeter changes with the shape's size. The lesson also includes reasoning tasks, such as constructing a shape with a specific perimeter using regular hexagons, and investigating different ways to create rectilinear shapes with a given perimeter. Independent work encourages students to apply their skills, measuring perimeters with rulers and creating shapes of specified perimeters, fostering a deeper understanding of the concept.