Lesson Plan - Get It!
Imagine you are running a relay race.
In order to cross the finish line, you and your teammates have to run 1 whole mile. Since there are four of you on the relay team, you will each run an equal part of the 1 mile.
Let's use a number line and your knowledge of fractions to figure out where each teammate should stand on the track.
A fraction represents the number of equal parts of a whole.
Sometimes you can use shapes split into equal parts to show a fraction:
You can also use fraction bars:
This time, let's use a number line to show fractions.
- Remember the relay race from above?
When you start a relay race, the first runner starts at the START line, or 0.
The four runners will run equal parts in order to cross the finish line at 1 whole mile.
Let's mark on the number line where each runner will start their equal part of the race.
Now, we are ready to make a fraction!
- The number line is split into how many equal parts?
Four! The number line is split into four equal parts! This number becomes the denominator of the fraction.
- If the runner at the START line runs to the next teammate, how much of the race did that runner run?
- In other words, if you start at the 0 on the number line and look at the point, what fraction does the number line represent?
The fraction shown on this number line is ¼ .
The first teammate will run ¼ of the one mile race! Each runner will run ¼ of a mile.
Let's think about the relay race in a few different situations. Draw a number line to help you understand.
If you would like to review what you have just learned, watch Fractions on a Number Line - 3rd Grade Math Videos for Kids from Math & Learning Videos 4 Kids:
To practice using number lines to show fractions, click "Next" to visit the Got It? section.