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Block and Tackle (Popularity:  )
Colorful illustrated tutorial shows how a block and tackle (as well as levers and gears) ...
Category: Science\Physics\Classical Mechanics
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Human Anatomy Online (Popularity: )
Illustrated guide to the body's major systems: skeletal, nervous, digestive, cardiovascular, muscular, lymphatic, endocrine, and ...
Category: Science\Medical Science\Anatomy
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Free Decimal Arithmetic Worksheets (Popularity: )
Free decimal arithmetic worksheets from S&S Software. Choose from 40 increasingly difficult skill levels to ...
Category: Science\Math\Education\Teaching Resources
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How Two-stroke Engines Work (Popularity: )
Illustrated tutorial describing the 2-stroke engine technology. Includes technical background, animations and applications. [HowStuffWorks]
Category: Science\Technology\Energy\Devices
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How a Compass Works (Popularity: )
Explanation of how compasses work and how to make your own, from How Stuff Works.
Category: Science\Physics\Electromagnetism
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QuickMath Automatic Math Solutions (Popularity: )
Solves algebra, differential, integral and matrix equations.
Category: Science\Math\Education\Homework Help
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How Stuff Works: Beam, Arch and Suspension Bridges (Popularity: )
Clear, concise explanations for various types of bridges with many illustrations and related links.
Category: Science\Technology\Structural Engineering\Bridge
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Doc Brown's Chemistry Clinic: The Halogens (Popularity: )
Includes an overview, general properties, reactivity trends, and information about the industrial electrolysis of sodium ...
Category: Science\Chemistry\Elements\Halogens
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SciNova Informatics (Popularity: )
Develops datamining and data management applications for the drug discovery and life sciences industries.
Category: Science\Biology\Bioinformatics\Companies
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Gyroscope (Popularity: )
Graphics, related links and a video combine to show you how gyroscopes work.
Category: Science\Physics\Classical Mechanics
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How a Helium Balloon Works (Popularity: )
Explanation of lifting capabilities of helium, hydrogen and hot air balloons, from How Stuff Works.
Category: Science\Physics\Classical Mechanics
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Sociology Central (Popularity: )
Sociology web site offering free resources for Sociology teachers and students.
Category: Science\Social Sciences\Sociology
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Australian Primary Schools Mathematical Olympiads Inc. (Popularity: )
Open to primary schools in Australia, New Zealand and surrounding countries.
Category: Science\Math\Recreations\Competitions
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How Gyroscopes Work (Popularity: )
examination of gyroscopes and the phenomenon called precession. Includes video clips, diagrams, and a discussion ...
Category: Science\Physics\Mechanics\Gyroscopes
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DISC Profile Personality Test (Popularity: )
DISC Personal Profiles System Personality Tests online responses reports, training consulting behavior seminar Profile tools ...
Category: Science\Social Sciences\Psychology\Personality
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MathDork - Math, Algebra interactive turtorials (Popularity: )
Unique learning experience using animation to make math more intuitive and fun. Animated images, sounds ...
Category: Science\Math\Algebra\High School
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RPN Calculator (Popularity: )
This Windows programs emulates a fully programmable HP29C RPN calculator that has been augmented with ...
Category: Science\Math\Software\Calculators
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My Language Exchange (Popularity: )
Language exchange learning via pen pals, text chat and voice chat using free lesson plans.
Category: Science\Social Sciences\Linguistics\Education
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HowStuffWorks - How Car Engines Work (Popularity: )
Explains the basics of Otto cycle engines. Include technical drawings and animations.
Category: Science\Technology\Energy\Devices
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International Agricultural Centre (Popularity: )
IAC offers training and consultancy services in agriculture, food and nutrition, rural development and the ...
Category: Science\Agriculture\Education
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