NUMBER LINE
Definition Of Number Line
A line that represents the set of all real numbers in order is called a number line.
More About Number Line
Usually a number line is marked showing integer values.
The distance between any two consecutive integers on a number line is the same.
Video Examples: Number Line
Examples of Number Line
The figure shown below is a number line.
Solved Example on Number Line
Ques: Identify the number line showing the interval [- 4, 5).
Choices:
A. Graph A
B. Graph B
C. Graph C
D. None of the above
Correct Answer: C
Solution:
Step 1: The number line for the interval [- 4, 5) is shown in Graph C.
Quick Summary
- A number line represents numbers visually.
- Integers are marked at equal intervals.
- It helps visualize the order and relationships between numbers.
🍎 Teacher Insights
Use physical manipulatives like counters or blocks to connect abstract number concepts to concrete representations on the number line. Encourage students to create their own number lines to solve problems.🎓 Prerequisites
- Counting
- Ordering Numbers
- Basic Arithmetic
Check Your Knowledge
Q1: Which number is to the right of 3 on a number line?
Q2: On a number line, which number is smaller: 5 or 2?
Frequently Asked Questions
Q: What is the purpose of a number line?
A: It's a visual tool to represent numbers and their relationships, aiding in understanding order, distance, and arithmetic operations.
Q: Do number lines only show whole numbers?
A: No, they can represent all real numbers, including fractions, decimals, and irrational numbers.