Teacher Preparation
Teachers will need:
Students will need:
Objectives
Students will learn how statistics can be represented in different types of graphs.
Lesson Outline
- Focus and Review
- Define the terms bar graph, line graph, and pictograph.
- Guided Practice
- Direct students to the
Colgate website.
- Students should study the different types of line graphs on the site.
- Have students record their interpretations.
- Teacher Input
- Record students interpretations on the board.
- Take a closer look at the two graphs with the class as a whole.
- What could have made these graphs clearer?
- How did the marketing department trick you into seeing something that was not
there? ** Graph in proportion and zero line included for comparison **
- Independent Practice
- Divide the students up into groups of even numbers.
- Divide each group in half. Give half of the group one picture from the worksheet.
Give the other half the other picture.
- Do not let each group see the others picture.
- Give students time to review and interpret their picture.
- Without showing each other their picture, have each group explain to their other group
members what information their picture portrayed.
- Closure
- Discuss which graph is accurate and which one is not.
- Discuss what made the misleading graph misleading and the differences between the two
graphs.
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