A calculator is a device for performing numerical calculations. The type is considered distinct from both a calculating machine and a computer in that the calculator is a special-purpose device that may not qualify as a Turing machine. Although modern calculators often incorporate a general purpose computer, the device as a whole is designed for ease of use to perform specific operations, rather than for flexibility.
(From Wikipedia, the free encyclopedia.)
Measure 4 Measure
A collection of interactive sites that
estimate, calculate, evaluate, translate, etc.
Martindale's Calculators On-Line Center
Calculator.com
Online Calculators
Links to Hundreds of Free Calculators
Earth Zone Measurement and Calculation Lessons
Measurement
Measurement - AAA Math
Measurement Worksheets
English System, Metric System
Measurement Mania
Metric Mania Lessons
Math Worksheets - Units of Measurement (Cyber Sleuth Kids)
A Dictionary of Units of Measurement (How Many?)
Measurement Unit Converter
Units of Measurement (Quiz Tree)
Measurement Lesson Plans - Educator's Reference Desk
Measurement Lesson Plans - Education World®
Sample Size Calculator for Surveys
Sample Size Calculator (The Survey System)
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