Ask students hold up their right index finger and place a red dot at the end of their finger with a red marker. Tell the students that the red dot represents an asteroid. Divide the class in half. Have students form two large circles. Choose one student in each group to record the data and another student to count the number of trials.
Students toss an inflatable globe around the circle.
When they catch the globe, they note where their right index finger lands, water or land, and report the results to the recorder. Each group makes 50 tosses. Encourage students to observe patterns that emerge as the number of simulations increase. Assist students in understanding that increasing the number of trials, helps them make a more accurate prediction. It helps to have a parent volunteer or assistant with one of the circles.