Is The Percentage Left Handed or Right Handed?
Grade Level & Subject Area: 8th Grade Math
Arkansas Framework:
Strand: Data Analysis and Probability
Standard 14: Data Representation
Students shall formulate questions that can be addressed with data and collect, organize and
display
DAP.14.8.2
Explain which types of display are appropriate for various data sets (scatter plot for relationship
between two variants and line of best fit)
Objective (What are the students’ going to accomplish):
Students will understand percentages and how to collect, organize and graph data in excel.
Materials:
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Grid Paper
Pencil
Computer lab
Whiteboard
Procedure:
There will be a classroom discussion using the whiteboard collecting data and on graphing data.
The class will work together, letting the x axis represent the number of right handed letters and
the y axis represent the number of left handed letters. Students will come up and enter data on
the board allowing them to get a better idea if data collecting.
Collecting Data:
Each student will be given a piece of grid paper. The class will then begin collecting data and for
20 seconds, have students using their right hands, put the first letter of their last name in each
square on a piece of square grid paper. Then after the 20 seconds is up, have them do the same
thing using their left hands. Now have them count and record the number of letters that they were
able to put using each of their hands.
Organize the Data:
Record the data in the table on the white board for the whole class too see. (Example)
Name of Student
Number of letters Right (X)
Number of letters Left (Y)
Students will make a first-quadrant graph of the data by plotting the above points, letting the x
axis represent the number of right-handed letters and the y axis represent the number of lefthanded letters.
The class will analyze the Data together:
1.
2.
3.
4.
Draw the Ambidextrous Line, y=x and explain why I'm calling it by that name.
What do the points above the line represent? Below the line?
Explain the significance of points being near the line?
What percentage of your class is left-handed?
Students will take the data, record and create a graph on their computer of the data collection.
Assessment (How will the students’ show you that the objective has been met):
Students will be assessed on their spread sheets, if the data was entered correctly and the graph is
created correctly.
A Brief Description of the Entire Lesson:
The class will have a classroom will use the white board to have classroom discussion on
collecting and graphing data. The students will participate and come to the white board entering
data in the correct place on the screen.
Students will then be given a piece of grid paper and for 20 seconds the will use the left hand and
make Y and then do their Right hand for 20 seconds and mark X on the grid paper.
The class will begin to collect the data together it will be on the white board so everyone
can see it on a chart as shown above. Then the class will analyze the data together doing
the following:
o
o
o
o
Draw the Ambidextrous Line, y=x and explain why I'm calling it by that name.
What do the points above the line represent? Below the line?
Explain the significance of points being near the line?
What percentage of your class is left-handed?
Students will then get on excel in their computers and take the data, record it and create a graph
to be assessed.