1. Sorting of Materials Objective: Relate the sorting of materials that can be observed in streambeds, road cuts, or beaches to the density and particle size of those materials.

3. Instructions: Number paper from 1-23. For one minute, turn to your table partner and taking turns make observations and tell what you see. Then explain how particles or materials of Earth are being naturally sorted by nature based on density. Last, write a brief summary of what you saw.