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CK-12 Foundation
Direction on the Earth: Using a Compass
Navigate the world of orienteering in an informative interactive. Earth science scholars learn practical direction skills, such as proper polar coordinates and pairing compasses with maps. The interactive map allows them to practice...
National Constitution Center
Abraham Lincoln's Crossroads
History enthusiasts participate in an interactive website that brings Abraham Lincoln to life as he shares his personal experiences between 1854-1864. Scholars listen and read carefully to form their own opinions and discover if they...
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Pendulum Energy Model
A simulation exploring the energy produced by a simple pendulum, written for middle school. Includes a lesson plan with accompanying worksheets.