Electricity travels at the speed of light, 186,000 miles per second. Through a simulation, classes see how the structure of energy bands in crystals of atoms determines how materials conduct electricity. Participants can change the...

In this online interactive English vocabulary skills learning exercise, students answer 10 matching questions which require them to fill in the blanks in 10 sentences. Students may submit their answers to be scored.

In this survey learning exercise, students take surveys and answer questions about famous Americans, inventions, and teen ethics. Students answer questions about 3 surveys.

In this online interactive Ralph Nader activity, students respond to 15 fill in the blank and multiple choice questions regarding the information included in the provided paragraphs.

In this online interactive American history worksheet, students answer 13 matching questions regarding 1920's America and the Hoover presidency. Students may submit their answers to be scored.