Curated OER
Electromagnetic and Physical Waves
Students compare and contrast electromagnetic and physical waves. In this wave lesson, students discover that all waves reflect, refract, and diffract energy. Students work in small groups to experiment with waves and evaluate the type...
Curated OER
The Grating Spectrometer; Light and Wavelengths
Students create a paper model that demonstrates wave interference for 3 wavelength from 2 sources. For this light and wave lesson, students use a real spectrometer and observe and measure the wavelength of spectral lines. Students then,...
National Nanotechnology Infrastructure Network
Powers of Ten with the Blue Morpho Butterfly
Explore the powers of ten while examining a Blue Morpho butterfly wing. Learners discover there is a lot more than meets the eye when one looks close enough.
Curated OER
Generation of Action Potentials in Nitella Giant Algal Cells
Students observe cytoplasmic streaming in Nitella cells. They examine the conduction of a wave of depolarization across other membranes, such as the axons of neurons. Students predict the effects of sending a small electric current...