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.

