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| Video 2: Line Plots, Bar Graphs, Histograms and
Circle Graphs |
| Bar Graphs |
Overview
The students use M&M candies to make a variety of graphs
using the same data. The lesson focuses on the need and value
of graphing techniques.
Objective
Students will be able to make a variety of graphs using the same
data. They will gain an understanding of how organizing the data
makes it easier to analyze.
Standards Addressed
Mathematics — Data Analysis
Grade 5
Data Collection, Benchmark E
02. Select and use a graph that is appropriate for the type
of data to be displayed.
04. Determine appropriate data to be collected to answer
questions posed by students or teachers, collect and display
data, and clearly communicate findings.
Grade 6
Data Collection, Benchmark D
03. Compare representations of the same data in different
types of graphs such as bar graph and circle graph.
Data Collection, Benchmark E
02. Select, create and use graphical representations that
are appropriate for the type of data collected.
Statistical Methods, Benchmark G
06. Make logical inferences from statistical data.
Materials
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Six 3-1⁄4 oz bags of M&Ms
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Each bag should be emptied into six clear containers, i.e.
8-oz plastic cups, sandwich bags, snack bags, plastic bowls,
etc.
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Poster-size paper
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Rulers
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Colored markers
Procedure
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Fill six containers with one bag of M&Ms each.
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Have the students divide into six groups, and distribute one
container of M&Ms to each group. Students should not empty
or touch the M&Ms in their container.
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Students should be given one minute to examine the contents.
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Ask the following questions in a rapid-fire format:
What color appears most often?
How many M&Ms are in your container?
How many of each color do you have?
Is there an equal number of each color?
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Discuss why these questions were hard to answer and what is
needed to make the information easier to interpret. Answer:
Organize data using a graph.
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The following graphing advantages should be included in this
discussion and listed on the board: organization of data, ease
of readability, speed of response, ability for quick comparisons,
ability to rank responses.
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Review vocabulary associated with graphs, such as x-axis or
horizontal axis, y-axis or vertical axis and consistent intervals.
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Assign each group one of these graph types to make on large
poster paper: bar graph, line graph, picture graph and circle
graph.
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Display the graphs on the board. Discuss their correctness.
Are the axes labeled? Are consistent intervals used? Is there
a title? Ask the students to write one paragraph explaining
why it was important to make a graph to find the answer to the
questions, and which graph was easiest to read and understand.
Evaluation
Rubric for Paragraph Evaluation
| Category |
4 |
3 |
2 |
1 |
| Use of Terms / Examples |
Every major point was well-supported
with several relevant facts and/or examples. |
Most major point were well-supported
with relevant facts and/or examples. |
Some major points were well-supported
with facts and/or examples, but some of the relevance was
questionable. |
None of the major points were supported. |
| Understanding of Graphs |
Information was clearly presented using
appropriate vocabulary. |
Most information was well-presented using
appropriate vocabulary. |
Some information was well-presented but
with flaws in vocabulary usage. |
Information was not adequately presented. |
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