Activities/Sliderule

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Sliderule.jpg

Where to get Sliderule

Activity | Source

About Sliderule

Sliderule-activity-icon.png


"The slide rule also known colloquially as a slipstick, is a mechanical analog computer." This Activity implements a basic slide rule with C, D, A, and L scales and can be used for multiplication, division, roots, addition and subtraction.

A nice discussion of the slide rule is found here [1]

The toolbars

SLiderule-main-toolbar.png

From left to right:

  • project-toolbar button
  • C scale (multiplication and division)
  • A scale (square and square root)
  • L scale (addition and subtraction)
  • display of calculation and results
  • stop button (not shown)

How to use a slide rule

Examples: In the gallery below, several simple examples are shown.


Multiplication

To multiply...

Example: 4+3+5+19+24=55

Division

Square

Square root

Addition

Subtraction

Discussion