1. Histograms

Histograms

Use Post-it® Notes to collect and visualize data as Histograms


  • Subject:

    Math

  • Topics:

    math, graphing, charts, histograms

  • Materials:

    Post-it® Notes, markers & dry erase markers

  • Grade Level:

    1st - 8th Grade, ESL

  • Estimated Time:

    10 - 20 minutes

  • Author:

    tina91

  • Histogram Supplies
  • 1

    Have students collect data that can be continuous such as height. Record their height in inches on a Post-it® Note.

  • 2

    Draw and label an X- and Y-axis on the board with categories of classification that are as wide as a Post-it® Note.

    • Draw and label an X- and Y-axis on the board
    • Ask your students to place their Post-it® Note in the correct category
    • Immediately everyone will see the shape of the histogram
    • Ask your students to place their Post-it® Note in the correct category, stacking them as they go.
    • Immediately everyone will see the shape of the histogram. Your students will enjoy using personal data and a chance to move around.
  • 3

    To discuss the effects of class width, you can recreate the histogram with smaller or larger class widths. As you complete the exercise, each student is given any Post-it® Note. There is no attempt to match it back to its owner. This speeds it up and gives kids a chance to practice placing a different value.

  • 4

    As each histogram is made, students can make sketches of them before changes are made. Then students can evaluate what class widths are best and why. This can be done in a structured group discussion and/or writing. They can also discuss the shape of the graph.

    • Then students can evaluate what class widths are best and why
    • With luck, you'll have an outlier to discuss
    • With luck, you'll have an outlier to discuss. With younger kids, including the teacher will always produce an outlier. In high school especially, heights between boys and girls are different.
    • You can add another dimension to the discussion by having boys write their heights on a blue note and girls on a pink note.
education charts classroom_activities elementary graphing math middle_school teachers notes

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