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In a universe full of motion, change is inevitable. Luckily, we find that some motions?like a planet orbiting the sun?are relatively constant and repetitive, and obey natural laws that we can come to understand thr...
Dynamos, Magnetic Reversals and Plate Tectonics
These pages, authored and curated by David P. Stern, describe a dynamo process that creates the magnetic fields of the Earth and the Sun. Flows of electrically conducting material through existing magnetic fields...
Flight to Mars
Created by David P. Stern, this set of three web pages provides a calculation of paths, times, and distances for a flight to Mars and back. The author uses a Hohmann transfer ellipse between two circular orbits. This is...
So You Want to Hit a Home Run?
Simple in design, this lesson plan, authored by Karlene Joseph of Walther Northern High School, covers basic concepts of motion including projectile motion, motion of rigid bodies, collisions and center of mass. The...
Periodic Motion - The Pendulum
Simply in design, this lesson plan was created by Deborah Lojkutz of Joliet West High School, the objective of this activity is to teach students the concept of periodic motion and relate it to the movement of a...
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