Perimeter and Area - Measure Perimeter - Planning

The Year 5 curriculum for Autumn includes a week dedicated to teaching students how to measure and calculate the perimeter of composite rectilinear shapes in both centimetres and metres, as well as how to calculate and compare the area of rectangles, including squares, using standard units such as cm² and m². Key vocabulary for this unit includes terms like side lengths, perimeter, composite rectilinear shapes, and formula, among others. The lesson plan includes a variety of resources, such as worksheets and presentations, to support the teaching and learning process. During the lesson, students will practice measuring perimeters from diagrams without grids and learn how to deduce the lengths of missing sides by using the lengths of parallel sides. The lesson also includes a practical activity where students double the size of a given shape on dotted paper, measure its perimeter, and explore the relationship between the side lengths and the perimeter of the enlarged shape.

Group work is an integral part of the lesson, with children working together to apply their understanding of perimeters to create shapes with specific perimeter measurements on a hexagonal grid. The lesson encourages discussion and reasoning to determine the number of sides required to achieve the total perimeter. Additionally, the lesson addresses common misconceptions, such as ensuring accurate measurement of sides with rulers. The plenary session includes a 'Give me five' activity, where students reflect on what they've learned, the skills they've used, and what they found challenging. The lesson is differentiated to cater to various levels of proficiency, from working towards fluency in measuring simple shapes to greater depth where students tackle more complex shapes and engage in problem-solving and reasoning tasks with different side lengths on hexagonal grids.