Computer Security Division: Computer Security Resource Center
Cybersecurity- and information security-related projects, publications, news and events. NIST: National Standards of Standards and Technology
Game Theory
Wolfram MathWorld: Applied Mathematics
Geometry Formulas and Facts
U of Minnesota Science and Technology Center
Interactive: Dictionary
Shodor. Useful when reading articles and not sure of a mathematical term
Maths in a Minute
+Plus Maths Magazine
NIST Digital Library of Mathematical Functions
National Institute of Standards and Technology
Prime Pages
The University of Tennessee at Martin
Role of Probability
Lisa Sullivan, Professor of Biostatistics, Boston University School of Public Health
Wolfram MathWorld
Especially useful--see Applied Mathematics
Mathematical Atlas
Collection of short articles
Golf Stats
Dog Statistics
Greenhouse Emissions Statistics
Healthcare Statistics
CDC: Data & Statistics
Centers for Disease Control & Prevention
Data.gov
United States
ESCAP Statistical Database
Regional perspective on development issues in Asia and the Pacific
Eurostat
European Statistics
FAO: Statistics
Food and Agriculture Organization of the United Nations
Google Public Data Explorer
Public Datasets
ILO: Statistics & Databases
International Labour Organization
IMF Data
International Monetary Fund
NationMaster
"NationMaster is a vast compilation of data from hundreds of sources."
OECD.Stat
Organization for Economic Co-Operation and Development
PEW Research Center: Datasets
United States
United Nations Statistical Databases
The United Nations Statistics Division is committed to the advancement of the global statistical system. We compile and disseminate global statistical information, develop standards and norms for statistical activities, and support countries' efforts to strengthen their national statistical systems. We facilitate the coordination of international statistical activities and support the functioning of the United Nations Statistical Commission as the apex entity of the global statistical system.
WHO: Health Data and Statistics
World Health Organization
WTO: Trade and Tariff Data
World Trade Organization
GeoGebra
"Great software for working with graphs, diagrams, functions, spreadsheets, statistics, calculus, and much more"
Desmos | Graphing Calculator
A beautiful, free online graphing calculator from desmos.com. Alternative to the above tool.
Illuminations
Interactives. NCTM (National Council of Teachers of Mathematics)
The On-Line Encyclopedia of Integer Sequences
Try 2,3,5,8,13,21,34,55,89,144,233,377
PlanetMath
Theorem and formulae. Find term in first box and then commandF to find entry
Python
"A modern, easy-to-learn programming language that is great for writing simulations"
Shodor Interactivate: Tools
Computational Science Education Reference Desk (CSERD), National Science Digital Library and the National Science Foundation.
WolframAlpha: Computational Intelligence
Compute expert-level answers using Wolfram's breakthrough algorithms, knowledgebase and AI technology