A lecture describing the marriage practices and legal status of women in Classical Athens.

Explore the microscopic organisms that live in the freshwater ponds with this video collection. These video clips feature unicellular organisms, from under the microscope, showing off their daily activities. Collection includes videos of...

This resistor color code activity allows you to change the resistance value with a slider and then determine the third digit, multiplier, and tolerance, providing the final resistance in ohms. It allows you to view how the passing...

Molecular Expressions at Florida State University offers a java applet to show the a working AC generator.

Animation going from the Milky Way all the way down to inside an atom by powers of ten. This animation helps illustrate and quantify the powers of ten.

This map shows the route that Mansa Musa took to Mecca in 1324.