Curated OER
The Discovery Of The Solar System
Students 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 and...
Curated OER
The Calendar
High schoolers engage in an overview of solar and lunar calendars, their history and lore. Also, of the day and the month, and their relations to the rotation period of the Earth and the orbital period of the Moon.
Curated OER
Kepler and his Laws
Students examine Kepler's Laws. They confirm Kepler's 3rd law by comparing orbital periods and mean distances for all major planets and study conic sections, qualitatively.
Curated OER
May The Earth Be Revolving Around The Sun?
Students trace the beginning of the heliocentric theory of the solar system--the idea that the solar system revolves around the Sun--to an observation by the Greek astronomer Aristarchus, which convinced him that the Sun was much bigger...
Curated OER
Precession
Learners explain how Hipparchus, around 130 BC, used a shift in the predicted location of a lunar eclipse to detect a slight shift in the path of the Sun around the sky. They examine the elliptical orbit in which the Earth travels around...
Curated OER
The Discovery of the Solar System
Students explain the observed motion of the planets. The inner ones move back-and-forth across the position of the Sun, while the outer ones usually advance in one direction, but with occasional temporary reversals known as "retrograde...
Read Works
Read Works: Nj Physics Professor Has the 'Right Stuff'
[Free Registration/Login Required] A biographical text about Dr. Greg Olsen, the third private citizen to travel to outer space. A question sheet is available to help students build skills in reading comprehension.