Exploring the Perimeter from Start to Finish

Exploring the Perimeter from Start to Finish

Learning Objective

At the end of the lesson, you will be able to calculate the perimeter of an object and apply it in real-life scenarios.

What do you already know about perimeter?

Definition of Perimeter

Perimeter is the distance around the outside of a shape or object.

Calculating Perimeter

To calculate the perimeter of a shape, add together the lengths of all its sides.

Example: Rectangular Garden

Suppose we have a rectangular garden with a length of 10 meters and a width of 5 meters. What is the perimeter of the garden?

Solution: Rectangular Garden

Perimeter = 2(length) + 2(width) = 2(10) + 2(5) = 20 + 10 = 30 meters

Interactive Exercise

Calculate the perimeter of a square with a side length of 8 centimeters.

Solution: Square Perimeter

Perimeter = 4(side length) = 4(8) = 32 centimeters

Real-Life Applications

Perimeter calculations are useful in various real-life situations, such as fencing a garden, measuring the length of a track, or determining the amount of material needed for a border.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.