Identifying Integers in Different Situations. Re­pre­senting Integers on a Number Line

By the end of the lesson, the learner should be able:

• to identify integers in different situations;
• to represent integers on a number line.

Activity 1

1. Mark a reference point on a level ground.
2. Make five steps from the reference point, marking each step.
3. From the same reference point, make and mark five steps in the opposite direction.
4. Using (0) as the reference point, assign a positive sign (+ve) to each of the number of steps made forward and negative sign (–ve) to each of the number of steps made backward.
5. Discuss and share your work with other groups.

Activity 2

1. Choose a reference point (O) on a level ground.
2. Write numbers on cards to represent positive steps or negative steps.
3. In groups, pick a card and make steps from the reference point according to the number of steps indicated.

Activity 3

Consider the following integers:
​–5, –1, +4, –3, 0, +1, +3, +2, +5, –4, –2

1. Represent the integers on a number line.
2. Discuss and share with other groups.

Use a number line in the exercise.