News

Beach Ball Toss

11/6/2017
Beach Ball Toss
CAROL BERLIN, THIRD-GRADE TEACHER, CHARLOTTE A. DUNNING SCHOOL, FRAMINGHAM, MASS.
To give my third-grade students a sense of the earth’s land-to-water ratio, we toss a beach ball that’s decorated as the globe. These are available inexpensively. As they catch the ball, they must report whether their hands land on earth or on water. I track their answers on the board. After every child has a turn, we tally the results. The ratio of hands-on water versus land matches fairly close with the earth’s water-to-land ratio of 70 percent and 30 percent.