Read My Bar Graph!

Learning Resource Type

Classroom Resource

Subject Area

Mathematics

Grade(s)

3

Overview

In this "Cyberchase" video clip, the kids create their own bar graph to track the amount of bugs in the main Cybrary. They compare their bar graph to the one that Hacker created (to trick Ms. Fileshare, the librarian) and realize that the two bar graphs are based on different scales.

Mathematics (2019) Grade(s): 3

MA19.3.16

For a given or collected set of data, create a scaled (one-to-many) picture graph and scaled bar graph to represent a data set with several categories.

UP:MA19.3.16

Vocabulary

  • Data set
  • Scale
  • Picture graph
  • Scaled bar graph
  • Category
  • Probability

Knowledge

Students know:
  • Strategies for collecting, organizing, and recording data in picture graphs and bar graphs.
  • Describe and interpret data on picture and bar graphs.
  • Strategies for solving addition and subtraction one-And two-step problems.

Skills

Students are able to:
  • Collect and categorize data to display graphically.
  • Draw a scaled picture graph (with scales other than 1) to represent a data set with several categories.
  • Draw a scaled bar graph (with scales other than 1) to represent a data set with several categories.
  • Determine simple probability from a context that includes a picture.
    Example: A bar graph displays data to represent students' favorite colors with data showing 4 students choose red, 11 students choose blue, 2 students choose green, and 4 students choose purple. If Jamal is a student in the class, what do you think his favorite color might be? Why?
  • Solve one-And two-step "how many more" and "how many less" problems using information presented in scaled graphs.

Understanding

Students understand that:
  • Questions concerning mathematical contexts can be answered by collecting and organizing data scaled pictographs and bar graphs.
  • Understand that logical reasoning and connections between representations provide justifications for solutions.
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