Convert It
Very easy-to use measurement conversion calculator. Use the 'Measurements Recognized' page to choose any combination of approximately 800 SI, metric, American, English, historical, and ancient measures.

Electronic Statistics Textbook
An searchable, online statistics textbook with an extensive glossary

Euclid's Elements
An exploration and explanation of the Elements, Euclid's contribution to geometry. Requires Java to be enabled in the browser.

Fibonacci Numbers and the Golden Section
A fascinating site with mathematical and geometrical facts as well as formulas, history, and diagrams. Included are methods of constructing golden sections in two or three dimensions. Additionally there is information about the golden section (or mean or rectangle) in architecture, art and music complete with examples.

Gallery of Interactive Geometry
A collection of interactive applications to visualize various concepts utilized in geometry.

Inflation Calculators
This page links to several useful tools that compute such things as the inflation rates of major cities and categories; cost of living comparisons between major U.S. metropolitan areas; inflation rates; and cost of living comparisons for hundreds of U.S. and international cities.

Linear Algebra Toolkit
A collection of interactive modules designed to help students learn and practice a basic linear algebra procedure.

Math2.org
A collection of math reference tables that includes general math, algebra, geometry, Odds and Ends (constants, vectors, complexity, and unproved theorems); trigonometry, statistics, and Advanced Topics (Fourier series and transforms).

Online Calculators, Conversion Tools, Measurements & Weights
A directory of resources that will calculate a variety of weights and measures. Includes a cost of living calculator that will compare cities within the U.S., a Roman numeral equivalencies calculator, a time zone converter, mortgage and credit card rates calculations, and a dictionary of most units of measurement found around the world.

Online Conversions
Converts just about every possible measurement, every possible way. Just a few of the possibilities are: acceleration, area, clothing sizes, cooking, density, luminance, mass, power, pressure, velocity, voltage, and volume.

Percentage Calculator
Find the value of the percentage of any given number.

S.O.S. Mathematics Tables and Formulas
An easily accessed list of common mathematics tables and formulas. Multiplication, primes, integrals, trignometrics, conversions, and derivatives are only some of the available tables. There is a section of online examinations to test your mathematical knowledge. A Cyberboard for questions is included, as well as links to books and additional math sites.

Temperature Conversion Calculator
Convert from and to - Fahrenheit, Celsius, Kelvin, Reaumur, and Rankine.

World of Mathematics
Also known as MathWorld, this site is a "comprehensive, and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers." The subject index includes algebra, applied mathematics, calculus and analysis, discrete mathematics, the foundations and history of mathematics, geometry, number theory, probability and statistics, recreational mathematics, and topology.

	Reference Department
	Tel: 203-291-4843	E-mail: ref@westportlibrary.org

Last update: 8/07