Curated OER
Determining the Altitude of Iridium Flares
Learners examine what iridium flares are and when they occur. In this iridium flare instructional activity students complete an activity to see how far overhead Iridium satellites are.
Physics Classroom
Kelper's Three Laws
A flipped classroom lesson introduces astrophysics fanatics to Kepler's three laws of planetary motion. After reading about the laws of ellipses, equal areas, and harmonies, and also learning how Newton's gravitation concepts come into...