1.)Erosion pictures to view can be found at this website for the preparation stage.
2.)Create a chart for the classroom explaining the differences between weathering and erosion.
3.)Students will be paired with a partner to do the experiments on showing how weathering happens. Each group will be doing the experiments using their workspace. They will be using a sugar cube and water.
4.)Have the students write a prediction in their science journal about what they think will happen to the sugar cube when it is exposed to water.
5.)Give each pair a pie tin and a sugar cube. With a dropper, have a student drop water slowly onto the sugar cube. With each drop of water the students can see how the water slowly dissolves the sugar cube. This is weathering. Relate this to the turtle in the story about how he became smaller over time.
6.)Refer back to science journals to see if their predictions were accurate.
7.)The students will now be given a place mat for a workspace, a small mound of sand and a straw.
8.)Have the students write a prediction in their science journal about what they think will happen to the sand when it is blown by wind or air.
9.)Have a student gently blow on the sand mound and observe how the sand has been moved. Explain that the total amount of sand is still present, only moved. This is erosion.
10.)Review that weathering causes changes but that erosion only moves the sand from one place to another.