Lesson 5 Represent Data in Scaled Bar Graphs

    • Let’s make a scaled bar graph.

Warm-up Number Talk: Twos and Fives

Find the value of each expression mentally.

Activity 1 Compare Bar Graphs

A class was asked, “How do you get home from school?” Their responses are shown in these two bar graphs:

Bar graph. How We Get Home. Vertical axis from 0 to 12 by 1s. Horizontal axis labeled bike, walk, bus or van, car. Height of bar: Bike, 12. Walk, 4. Bus or van, 6. Car, 3.
Bar graph. How We Get Home. Vertical axis from 0 to 24 by 2s. Horizontal axis labeled bike, walk, bus or van, car. Height of bar: Bike, 12. Walk, 4. Bus or van, 6. Car, 3.

Discuss with your partner: How are the two graphs alike? How are they different?

Activity 2 Create a Scaled Bar Graph

Represent the data we collected earlier in a scaled bar graph.

Use the graph with a scale of 2 or the graph with a scale of 5. If you have time, you can make 2 graphs. Be sure to label your title and categories.

Empty scaled bar graph. Horizontal axis unlabeled. Vertical axis from 0 to 16 by 2s.
Empty scaled bar graph. Horizontal axis unlabeled. Vertical axis from 0 to 40 by 5s.

Practice Problem

Problem 1

The table shows the number of different shapes in a pattern block puzzle. Use it to complete the scaled bar graph.

shape

number

triangle

trapezoid

square

hexagon

Empty bar graph. Shapes in Puzzle. Vertical axis: number of shapes from 0 to 16 by twos. Horizontal axis: triangle, trapezoid, square, hexagon.