# Make Your Own Unit Converter

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Often students use unit conversion charts to perform unit conversions

which is not fun.

In this activity, students build their own paper unit converter.

To use the converter, first select between which units you want to make

the conversion and find corresponding unit-converter handle on the

slider. For example meters-to-feet. Then, on the "metric" scale, align

the number of meters with "meters/feet" handle. The "meters/feet"

converter handle points to the answer on the "imperial" scale.

Caveat: If you find that the conversion scale is too short, convert a

number which is 10 times smaller, then multiply the answer by 10. For

example, the converter cannot convert 50 meters to feet because 50m is

164 feet an the scale goes only to 100. Therefore, convert 5 meters to

16.4 feet. then, multiply 16.4 feet by 10 to find that 50m is same as

164 feet.

To build the calculator, one needs to make three straight cuts

and two straight folds. The assembly instructions are provided

on the reverse side of the calculator.

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