Curated OER
Soil Erosion
Students examine how erosion is affected by the composition of the soil and the slope of the land. They look at plant roots, rocks and land slope as experimental factors. They complete the associated worksheets before discussing their...
Curated OER
Agents of Erosion
Fourth graders explore the agents of erosion. They observe rocks that are rough and unweathered and record observations. They investigate rocks rubbed with sandpaper and ones that are not and the effects that the sandpaper has on the...