Curated OER
Astronomy - Ancient Philosophies
Combine science and social studies with this collection of notes on ancient astronomy. Ideas propagated by early scientists influenced the way people viewed life and our place in the universe. Examine the philosophies of Aristotle,...
Curated OER
The Discovery Of The Solar System
Young scholars study the heliocentric theory of Copernicus, the ideas behind it and the explanations which it displaced. A discussion of retrograde motion of planets helps students explain the logic underlying the ideas of both Ptolemy...