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Science -- Mathematics -- Instruments and machines -- Calculating machines

Classifications (LC)
Electronic computers. Computer science (319)

 

Resources

Abacus: The Art of Calculating with Beads
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...
Excel: Locking Cell References
In this animated and interactive object, students read how to lock a cell that is being referenced in a formula so that it does not automatically show an increment when the formula is copied. Target Audience: 2-4 Year...

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