Grade Level: 4th Grade
Water was the most important environmental factor in early human settlement and rivers were useful sources of water. They were important sources for fresh drinking water, washing, food, and transportation. Floods are a natural part of river ecosystems and flood control by humans has been practiced since ancient times with methods such as reforestation, and the construction of levees, dams, reservoirs and channels diverting floodwater. Farmers often settled near rivers for steady access to water. The river’s natural flooding could help irrigate their farms and in dry seasons the farmers could dig canals or trenches to direct river water to their crops.
4-ESS2-1 Earth’s Systems
Make observations and/or measurements to provide evidence of the effects of weathering or the rate of erosion by water, ice, wind, or vegetation.
4-ESS3-2 Earth and Human Activity
Generate and compare multiple solutions to reduce the impacts of natural processes on humans.
Steffen, Peg, "Earth/Space Science - FLOODS! Erosion by Water" (2020). Model NGSS Lessons: 4th - 5th Grade. 2.
4th Grade Floods Student Pages DC.pdf (405 kB)
4th Grade Floods Student Pages Aerial Photos DC.pdf (308 kB)
4th Grade Floods Aerial River Views PowerPoint DC.pptx (619 kB)
4th Grade Floods PowerPoint DC.pptx (1888 kB)
STT Bookmark Set.pdf (958 kB)