Max Maths, Year 4, Learn together, Perimeter (2)

In a mathematics lesson for Year 4 students, the concept of perimeter is explored with a practical example involving a square swimming pool. The students are reminded that to calculate the perimeter of a square, one must multiply the length of one side by four. This is because all four sides of a square are equal in length. To find the length of each side when the perimeter is already known, the process is simply reversed. The total perimeter is divided by four to determine the length of one side.

For instance, if a square swimming pool has a perimeter of 28 metres, the length of each side can be found by dividing the total perimeter by four. Performing this calculation, 28 metres divided by 4 equals 7 metres, revealing that each side of the swimming pool is 7 metres long. This method provides a straightforward solution for squares. However, the lesson prompts students to consider how this might differ for rectangles, hinting at the complexity of shapes with unequal sides. To delve deeper into this topic, students are directed to continue their learning by referring to specific workbook pages.