Curated OER
Black Holes and Tidal Forces
In this black holes and tidal forces instructional activity, students solve 5 problems in which they find the tidal acceleration and answer questions about spaghettification.
Curated OER
Our Universe: Always Moving, Always Changing
Students explore the main concepts of astronomy through the eleven lessons of this unit. The past, present, and future methods of studying the science are examined in this unit.