American Museum of Natural History
A Walk Through the Ruins of Petra
Walking through the ancient Nabataean city of Petra can be a challenge. A tour begins with a 20-minute walk down a rocky slope through the narrow Siq to get to the famous Treasury known to Indiana Jones fans. But that is...
Cool Math
Coolmath: Perpendicular Lines
This CoolMath Resource will help students determine if lines are perpendicular by finding the slope, using the point-slope formula, and graphing.
Ducksters
Ducksters: Kids Math: Graphs and Lines Glossary and Terms
This site contains a math glossary and terms on graphs and lines for kids. Find definitions used in this mathematics subject such as coordinates, midpoint, and slope.
Other
Karl's Calculus: Derivatives: The Equation of the Tangent
This site goes through a step by step example of how to find the equation of the tangent to a curve using the derivative.