Birthday Graph: Analyzing A Scatter Plot

Supplies Used: Adhesive Letters and Numbers, Construction Paper, Glue, Black Marking Pen, Chart Paper, 1" Cartesian Graph or Grid Paper, Poster Board

The teacher will die-cut the materials for student use prior to the lesson.

1. Die-cut twelve 1" Circles and the Graph using construction paper.
2. Print numbers, months of the year, axis labels and title for the Graph. Be sure that the numbers and words are no more than 1" tall.
3. Use a paper cutter or hand-cut the numbers, months, labels and title.
4. Adhere Graph the center of a poster board or chart. Alternatively, a cartesian graph or grid paper can be used.
5. Mat the title and adhere to the top of the chart.
6. Adhere numbers along the vertical axis and months along the horizontal axis.
7. Adhere the axis labels.
8. Record the data for number of students (x) and number of months (y) on a data table. For months, understand that January equals 1, February equals 2, and so on. Use the Circles to plot the data and adhere (see Main Photo).
9. Draw a best fit line to show a positive linear relationship (see Main Photo #2).

Note: Die-cut any 1" shape to plot points on the Graph. Use larger shapes with larger grid paper.