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MISLEADING GRAPHS

MISLEADING GRAPHS. Powerpoint by Leah Montange Lesson by Leah Montange and Daniel Perry. EALR’s and GLE’s. Grade Level:  Grade 4 EALR:  3. The student uses mathematical reasoning. Component:  3.1 Analyze information.

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MISLEADING GRAPHS

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  1. MISLEADING GRAPHS Powerpoint by Leah Montange Lesson by Leah Montange and Daniel Perry

  2. EALR’s and GLE’s • Grade Level:  Grade 4 • EALR:  3. The student uses mathematical reasoning. • Component:  3.1 Analyze information. • GLE:  3.1.1 Analyze and compare numerical, measurement, geometric, and/or statistical information in familiar situations. • EX: Differentiate between a valid and invalid comparison of mathematical information or results.

  3. Learning Objectives • Students will be able to identify whether graphs are misleading.  • Students will be able to identify the factors that can make bar graphs, line graphs, and scatter plots misleading.  • Students will be able to interpret whose interests are favored by misleading graphs. 

  4. Think About It: • What is misleading about this graph? • How could the graph be changed to reflect the data more accurately? • Why would someone make a graph that is misleading in this way?

  5. Why is this graph misleading?

  6. The same data: www.mediamatters.org/items/200503220005

  7. Factors that make a graph misleading: • Y-axis scale is too big or too small • Y-axis skips numbers, or does not start at zero • X-axis scale is too big or too small • X-axis skips numbers, or does not start at zero • Axes are not labeled • Data is left out • What else?

  8. Think Pair Share • What is misleading about this graph? • How could the graph be changed to reflect the data more accurately? • Why would someone make a graph that is misleading in this way?

  9. http://sde.state.ok.us/publ/invest00/bench.html

  10. http://www.brickonomist.net/?cat=20

  11. Activity Time • Gather class data • Make a class data table • Individually graph it: • Accurate graph • Misleading graph

  12. Interdisciplinary Connections: Media Literacy Accommodation Notes: Opportunity to express socioeconomic class-related perspectives on the validity of data (See Trentatosta, p. 48)

  13. Notes on Pedagogy: Empowerment of students to be able to read the world. We made a point of: • Using real published graphs from news sources, advertisements, reports, etc. • Having the class create misleading graphs using real data that the class generates

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