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The abacus has been around for several thousand years, and it is an efficient and interesting counting machine. The standard abacus can be used to perform addition, subtraction, division, and multiplication, along with...
This website from David M. Harrison of the University of Toronto's physics department provides an animation of the addition of two vectors. Instructors may use this animation in explaining the concept of adding vectors...
This online exercise lets students practice vector addition. They choose the precision of the test by selecting a target size, then estimate the sum of the two vectors by dragging and dropping a third arrow. Points are...
A collection of games and puzzles for math review, this page provides visitors with a number of ways to engage in math topics. There are ten javabased and eleven nonjava flashcard collections on concepts including...
This set of videos, authored by Salman Khan of the Khan Academy, represents the most basic of the math playlists. Start here if you have very little background in math fundamentals (or just want to make sure you do)....

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