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eBook
Mathigon

Mathigon: Geometry: Circle and Pi: Degrees and Radians

For Students 9th - 10th Standards
Rather than dividing a circle into some number of segments (like 360 degrees), mathematicians often prefer to measure angles using the circumference of a unit circle - a circle with radius 1. This way of measuring angles is called...
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Activity
Science Buddies

Science Buddies: Hey Gear Heads! The Physics of Bicycle Gear Ratios

For Students 9th - 10th
Here's an abstract of a project from Science Buddies that asks you to experiment with bicycle gears and the circumference of the wheel to determine revolutions per minute.
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Activity
TeachEngineering

Teach Engineering: How Far Does the Robot Go?

For Teachers 6th - 8th
Students practice their multiplication skills using robots with wheels built from LEGO MINDSTORMS NXT kits. They brainstorm distance travelled by the robots without physically measuring distance and then apply their math skills to...
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Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: The Cylinder Problem: High School Lesson

For Teachers 9th - 10th Standards
Using an engaging approach, this lesson requires students to record the volume of cylinders as a function of the radius. Students will construct and measure the volume of several cylinders and then begin comparing these shapes.
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Website
Rice University

Rice University: Cynthia Lanius: Mathematics of Cartography

For Students 9th - 10th Standards
Can there be a connection between map making and math? Explore the mathematics of cartography in this resource that integrates web-based instruction, mathematical problem solving, geometry, history, and art. Interesting information and...