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Lesson 3: Line plots with fractions

# Line plots review

Review the basics of lines plots and then practice creating and reading line plots.

## What are line plots?

A line plot is a way to display data along a number line.
Line plots are also called dot plots.
Below is an example of a line plot showing the distance 17 turtles traveled in an hour (we know it is 17 turtles because there are 17 dots on the line plot).
The 3 dots above 21 mean that 3 turtles traveled a distance of 21 meters in an hour.
A line plot labeled distance (meters) shows, moving left to right, labeled tick marks at 20, 21, 22, 23, 24, 25, 26, and 27. Dots are plotted as follows: 3 dots above 21, 2 dots above 23, 4 dots above 24, 4 dots above 25, 1 dot above 26, and 3 dots above 27.

## Graphing data on line plots

To graph data on a line plot, we put a dot (or an X) above each number in the data set. If a number appears twice in the data, we put two dots above that number.
For example, a graph of the data set 4, comma, 5, comma, 5, comma, 6 would look like this:
A line plot shows, moving left to right, labeled tick marks at 4, 5, and 6. Dots are plotted as follows: 1 dot above 4, 2 dots above 5, and 1 dot above 6.

## Practice set 1: Reading line plots

Problem 1A
• Current
The lengths of alien arms are shown below.
How many alien arms are longer than 96 centimeters?
alien arms
A line plot labeled length (centimeters) shows, moving left to right, labeled tick marks at 95, 96, 97, 98, and 99. Dots are plotted as follows: 4 dots above 95, 3 dots above 96, 2 dots above 97, 2 dots above 98, and 2 dots above 99.

Want to try more problems like this? Check out this exercise.

Problem 2A
• Current