Length and Perimeter - Activity calculate perimeter​ - Planning

The lesson plan for Year 3 students during the Spring term focuses on measuring the perimeter of simple 2D shapes, aligning with the National Curriculum objectives. The key vocabulary for this unit includes terms such as perimeter, calculate, measure, shape, rectangle, length, and units of measurement like centimeters (cm) and millimeters (mm). Students will use resources such as a teaching presentation, worksheets, rulers, and squared paper to aid their understanding. They will participate in a variety of activities designed to deepen their grasp of perimeter, including partner discussions, practical exercises, and reasoning tasks. The aim is to enable students to investigate and calculate the perimeters of different shapes, recognizing the importance of consistent units of measurement and the need to include all sides in their calculations.

Throughout the lesson, students will engage in a 'fluent in four' questions starter, practical work where they measure and calculate perimeters, and reasoning activities that encourage them to explore various shapes and their perimeters. Key questions posed during the lesson will challenge students to think about the concept of perimeter, different methods of calculation, and the relationship between shape and perimeter. The lesson also addresses common misconceptions, such as confusing perimeter with area or neglecting to convert units. By the end of the lesson, students will have a better understanding of perimeter, having practiced their skills in addition and problem-solving with 2D shapes. The plenary includes a 'Give me five' reflection activity that prompts students to consider what they have learned, the skills they used, and what they found challenging, ensuring they remember the key points from the lesson.