Use the ruler to cut a square out of the construction paper measuring 12 inches on a side. Tape the construction paper to the floor. Measure a line that is 5 feet from the square and mark this line with the tape. Finally, make a table like the one below on a piece of notebook paper.

One student is the recorder and the other is tosser. The tosser stands behind the masking tape line and tosses the quarter. If the quarter lands on the construction paper, the recorder puts a tally mark in the tally column across from the 12 in. × 12 in. square. This continues until the student has tossed the coin 20 times. The recorder then counts the total number of hits and records this in the column labeled Number of Hits, writes the ratio of hits to the total number of tosses in the next column, and expresses the probability as a decimal in the final column.

Cut out another square that measures 6 inches on a side. Tape the construction paper to the floor. Switch rolls as recorder and tosser. Then repeat the above procedure to fill in the next row of the table. When finished, discuss the following questions.

• Which probability was the highest?
• Do the results of your experiment seem reasonable? Why or why not?