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Students will explore the processes associated with stream erosion by observing an actual small-scale erosional-depositional system.

Students learn about mechanical weathering, chemical weathering, and erosion by modeling a range of weathering and erosional processes and sorting them into categories. Students then read a text about the difference between mechanical weathering, chemical weathering, and erosion and use this understanding to make evidence based claims about the kind of surface processes they modeled in the explore phase and to explain how sinkholes are formed. Finally, students learn about factors that affect weathering rates and use that understanding to explain how another surface feature was formed.