Mean Averages: Finding the Middle Ground

Mean Averages: Finding the Middle Ground

Learning Objective

At the end of the lesson, you will be able to define and calculate mean averages.

What do you already know about averages?

Definition of Averages

Averages are numbers that represent the middle or typical value of a set of data.

Mean Average

The mean average is calculated by adding up all the numbers in a set and dividing the sum by the total count.

Calculating Mean Average

To calculate the mean average, add up all the numbers and divide the sum by the total count.

Exercise 1

Calculate the mean average of the following numbers: 5, 8, 12, 6, 10

Solution - Exercise 1

Add up all the numbers: 5 + 8 + 12 + 6 + 10 = 41. Divide the sum by the total count: 41 ÷ 5 = 8.2

Exercise 2

Calculate the mean average of the following numbers: 15, 20, 25, 30

Solution - Exercise 2

Add up all the numbers: 15 + 20 + 25 + 30 = 90. Divide the sum by the total count: 90 ÷ 4 = 22.5

Exercise 3

Calculate the mean average of the following numbers: 2, 4, 6, 8, 10, 12

Solution - Exercise 3

Add up all the numbers: 2 + 4 + 6 + 8 + 10 + 12 = 42. Divide the sum by the total count: 42 ÷ 6 = 7

Classroom Task

Measure the height of every student in the class. Calculate the mean average of their heights.

Guidelines for Classroom Task

1. Use a measuring tape or ruler to measure each student's height. 2. Record the measurements. 3. Add up all the measurements. 4. Divide the sum by the total count of students.

Conclusion

You have learned how to define and calculate mean averages. Keep practicing to strengthen your understanding.

Review

What is the definition of averages? How do you calculate the mean average?

Summary

Averages represent the middle or typical value of a set of data. Mean average is calculated by adding up all the numbers and dividing the sum by the total count.

Q&A Session

Encourage students to ask questions and clarify any doubts they may have.

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.