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
Astronomer Research
Learners discover the contributions of early astronomers and scientists. In this research skills lesson, students research electronic and print sources about Galileo Galilei, Aristarchus, Hipparchus, Claudius Ptolemy, Nicholas...
Curated OER
May Earth be Revolving around the Sun?
Ninth graders explore how Aristarchus used the position of the half-full Moon to estimate the distance to the Sun, and how he made a great error, but still figured out that the Sun is much larger than Earth.