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Introduction We live in a three-dimensional world. Every object you can see or touch has three dimensions that can be measured: length, width, and height. The room you are sitting in can be described by these three dimensions. The monitor you're looking at has these three dimensions. Even you can be described by these three dimensions. In fact, the clothes you are wearing were made specifically for a person with your dimensions. In the world around us, there are many three-dimensional geometric shapes. In these lessons, you'll learn about some of them. You'll learn some of the terminology used to describe them, how to calculate their surface area and volume, as well as a lot about their mathematical properties.

Welcome to Math Matters, where we employ 21st century learning tools and methodologies to help make math relevant and fun again for both you and your students. This 30-segment video resource focuses on ninth grade Pre-Algebra and Algebra. What makes this unit different from most? It revolves around the world of off-road motorcycle racing. Team HotChalk worked with a group of young HotChalk-sponsored cyclists, videotaping them jumping off ramps along dirt bike tracks and racing up the golden summer hills of a ranch overlooking the ocean in Central California. Courtesy of math teachers Jason Dyer (Pueblo High School, Tuscon, AZ), who scripted out the 'real world' algebra problems, and John Villavicencio (Berkeley High School, Berkeley, CA), who explains the step-by-step solutions in each segment, we are bringing you our first homemade model of YouTube-style learning, "Off-Road Algebra." Our hope is that you'll try out this unit with your class, and let us know what you think. We'd like you to be active participants in helping to shape the digital resources we feel are at the heart of learning in the new century. You may also be interested in our Financial Literacy for Students series.  

Using Google Earth in the math classroom