Curated OER
Life Giving Rivers
Students examine the world's rivers in this six lessons unit which mingles science with social studies. The dynamic forces that create erosion in nature are also seen as habitats and ecosystems that are affected by environmental and man...
Intel
Using Electricity on the Job
Learners explore electricity, discussing its importance and researching different ways in which electricity can be generated. Groups present their findings to the class and then create publicity materials which promote and educate about...
CK-12 Foundation
Ck 12: Fourth Grade: Earth Science: Erosion and Deposition by Flowing Water
[Free Registration/Login may be required to access all resource tools.] Discusses how flowing water causes erosion; describes how runoff, streams, and rivers change Earth's surface; and identifies features caused by groundwater erosion.
Other
Iguazu Falls
Great introduction to Iguazu Falls in South America, on the borders of Brazil, Paraguay, and Argentina. This site is definitely geared for elementary school students, but older students may also enjoy the visit.