Perimeter - PowerPoint

In this engaging Year 4 mathematics resource, pupils are introduced to the concept of perimeter, learning how to measure and calculate the total length around the outside of various 2-D shapes in both centimetres and metres. The lesson begins with a catchy song that helps students remember what perimeter is all about. The key instructional point is that the perimeter is the total length of all sides of a shape. Students are taught to find the perimeter by measuring each side of the shape and then adding these lengths together. To aid in this process, a 'Top Tip' is provided, suggesting students mark a starting point with an 'X', note down each length as they move around the shape, and then sum these lengths to find the perimeter.

The lesson continues with practical exercises where students are tasked with calculating the perimeter of various shapes presented on subsequent slides. They are encouraged to apply their knowledge of squares and rectangles to find the perimeter of more complex shapes. Additionally, the resource includes perimeter word problems that challenge students to apply their understanding to real-life contexts. For example, they may be asked to determine the lengths of unknown sides of a rectangle given the total perimeter, or to calculate the length of each side of a regular octagon with a known perimeter. These activities are designed to deepen the students' comprehension of perimeter and to develop their problem-solving skills.