US Department of Energy
Effects of Solar Radiation on Land and Sea
Earth science enthusiasts experiment to compare the heating rates of soil and water. They relate their findings to the weather conditions near bodies of water. Consider also having middle schoolers measure the cooling rates to...
Curated OER
Let There Be Light!
Fourth graders conduct experiments involving reflected light, absorption of light, refracted light, and colors absorbed by light. For this light lesson plan, 4th graders write about the results of their experiments as well.
CK-12 Foundation
Ck 12: Physical Science: Reflection of Light
[Free Registration/Login may be required to access all resource tools.] Considers the reflection of light from both smooth and rough surfaces and the law of reflection.
Optical Society
Optical Society of America: Optics for Kids: Black Is Black or Is It?
An experiment with a coffee filter and a marker to see what happens when water touches a black dot, or any other color. With links to several scientific, academic articles that explain what is happening.