Perimeter - rectangles with missing lengths

The educational resource from KS2Gems focuses on the concept of finding the perimeter of rectangles, particularly when certain lengths are missing. It presents a series of exercises where students are given the total perimeter of a rectangle and some of its sides, while they are required to deduce the missing lengths. For example, a rectangle might have a total perimeter (P) of 44 centimeters, with one side given as 10 centimeters, and students must use this information to calculate the lengths of the other sides. These exercises come in various measurements, including centimeters (cm), meters (m), and millimeters (mm), ensuring that students can apply their knowledge across different units of measurement.

The resource includes multiple slides, each featuring different rectangles with unique perimeters and known side lengths. Students are challenged to apply their understanding of the properties of rectangles to solve for the missing measurements. This task helps reinforce their skills in addition and subtraction within the context of geometry. The variety of perimeters provided, such as 14 meters, 106 meters, 34 millimeters, and so on, offers a range of difficulty levels to cater to different abilities within the classroom. The aim is to encourage problem-solving and critical thinking as students work through these geometric puzzles.