Students are introduced to algebraic expressions that use more than one variable and have multiple solutions. They figure out combinations of two items at different costs, with each combination adding up to 100.

In this Cyberchase video segment, the CyberSquad must locate each other using a map's grid to construct a coordinate system using letters and numbers.

In this video segment from TV411, WNBA player Olympia Scott Richardson discusses her techniques for effective time management.

This video, adapted from material provided by the ECHO partners, describes three different ways that people have navigated the oceans.

In this Cyberchase video segment, Harry tries to snowboard and learns how to measure and identify many common angles.

In this video segment from Cyberchase, Bianca goes on a quest to find out if a coin toss really is a 50-50 proposition.

In this video segment from Religion and Ethics Newsweekly, Imam Bashar Arafat, a scholar and interfaith leader in Baltimore, Maryland, describes __Œ‹í‹__zakaat,__Œ‹í‹Œ‹Ű_ an almsgiving tax that Muslims pay annually.