Material
1. An apple
2. Cutting board
3. Knife
4. Toothpicks
5. Small pieces of paper (prepare the labels ahead of time)
Pretend that an apple is planet Earth, round, beautiful, and full of good things. Notice its
skin, hugging and protecting the surface. Water covers approximately 70% of its surface.
Right away, cut the apple into quarters. Toss one quarter (25%) away. This one quarter
you just removed represents dry land. What is left (75%) represents how much of the
earth is covered with water – oceans, lakes, rivers, and streams.
Remove the peel from one of the three remaining quarters. This represents 3% of water
on earth that is freshwater. The remaining pieces represent the saltwater of the oceans.
Cut the peel into three equal pieces. Set two pieces aside. The remaining piece
represents 1% of the freshwater not frozen in the polar ice caps (2%)
Of this remaining 1%, not all of it is potable – some is contaminated by pollution.
Books we read
After you are done your demonstration enjoy your apple snack.
This video demonstration uses water.
Read more about our water unit by clicking the picture below.
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