Tuesday, December 2, 2008

Sand and cinnamon

$3.22 buys 50 pounds of sand and loads of messy fun!

Each cooperative science team began with a box of sand sprinkled with a layer of cinnamon (modeling a patch of mountainous earth). The team then modeled geological processes of wind and water erosion.

Winds scoured the land.

Next, it began to rain--lightly and then a downpour.

Finally, a river formed and cut its way through the mountain.

Over time, erosion changed the surface of our patches of earth (and our classroom smelled fabulous!). Erosion also revealed some exciting surprises, hidden under the surface of the soil! (Tomorrow, young paleontologists will investigate.) The Sun, the Wind, and the Rain by Lisa Westberg Peters was a great conclusion to our lesson.




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