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Jon A.'s Resources

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A student needed to draw a circle with a 2" diameter, then draw the following angles: 100°, 120º, and 140º. She had her compass but didn't have her protractor.   First she drew the circle, then she drew 2 perpendicular diameters. Since a circle encompasses 360º, each quadrant comprising 90º. We drew the 120º angle first using an entire 90º quadrant plus 1/3 of the adjacent quadrant,... read more

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Roots, bases, prefixes, and suffixes are the building blocks of the English language. Master these, and you're well on your way to mastering the English language. Here are some samples to get you started. See how many you can think of or identify. 1. Base: photo (light) photography (light writing, writing with light) photosynthesis (light processing) How many more can you come up with... read more

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Here's a math challenge for you: Which is larger, the volume of a cube 5 inches on a side, or the volume of a sphere with a diameter of 6 inches?

Blogs

Here's a math challenge for you: Suppose you are traveling at 70 mph, while a mile-long train headed in the same direction and parallel to the freeway is traveling at 50 mph. How long will it take to pass the train?