Cybrary Man's Educational Web Sites
The internet catalogue for students, teachers, administrators & parents.

Over 20,000 relevant links personally selected by an educator/author with over 30 years of experience.


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Calculators and Units of Measurement



Unit Converter  *

Time Zone Converter  *

Dad's Fraction Calculator*

Dad's Slope Calulator*

Calculators and Converters

Martindale's Calculators On-Line Center

Free Online Calculators -

Good Calculators

Online Conversion - Convert just about anything to anything else

Desmos | a beautiful, free online graphing calculator

Online Calculators

Time Zone Converter

Measurement Converter: Conversion of Weights and Measures

Metric Conversions

Universal Currency Converter

USPS Postage Rate Calculator

Vintage Calculators

Conversions page

*Sponsored link


Mini Metric Olympics
Contributed by my granddaughter

Paper Plate Disk Toss
Need: Space, Paper Plates, Measuring Tape
Throw paper plate. Measure in centimeters how far the plate travelled.

Drinking Straw Javelin
Need: Space, Drinking Straw, Measuring Tape
Throw straw & measure in centimeters to longest side

Big Foot

Need: Measuring Tape - 2 feet
Take the longest step and measure the distance between the feet

Right Hand Marble Grab
Need: 20 or 30 marbles, right hand and a bowl.
With the marbles in a bowl, close your eyes and grab as many marbles as possible.

Sign on lawn: Metric lawn, no feet please.

Units of Measurement (Quiz Tree)

Weights and Measures

Tables of Metric Weights and Measures Sooeet! Convert Units of Measurement