HEATKEYS

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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

Purplemath contains practical algebra lessons demonstrating useful techniques and pointing out common errors. Lessons are written with the struggling student in mind, and stress the practicalites over the technicalities. Links and other resources als...

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Make everything easier in your life with step-by-step instruction, how-to information, and video demonstrations awaiting your discovery at dummies.com ? the online resource for fun fact-finding.

International Unit Conversion Calculator - Free unit conversion calculator for easy measurement conversion. International Unit Converter allows metric measurement conversions in many categories.

International Calculator for Converting Units - Free Tool for Measurement Conversion. Metric (SI) Unit Conversions for 1000+ Scientific Measurements.

Online weights and measures conversion. Online calculators for quick and easy metric conversion, conversion tables for both commonly used and very exotic units.

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of one man, Salman Khan, this 1600+ video library is the most-used educational video resource as measure...