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"On Multiplication.com students can choose from dozens of games to play to practice their multiplication skills. Students can play single-player and multi-player games. Before they play the games students can refresh their memories by working through the "fact" and "quiz" navigators that provide visual explanations of multiplication facts."

This website provides visual and written explanations of various aspects of mathematics. The Museum is maintained in Japan and a couple of the sections are available in Japanese only.

Schlumberger Excellence in Educational Development, Inc. (SEED) offers creative math puzzles, with solutions. Puzzle categories include: * Number Sense * Arithmetic * Probability * Algebraic Thinking * Geometry, Spatial Reasoning, and Visualization * Topology * Logic * Combinatorics * Miscellaneous

GeoGebra: Do the Math is a series of screencast tutorials for teachers and/or students. The tutorials were initiated as a project to support Maine math teachers in the integration of technology in the classroom. What is GeoGebra provides an overview of the program and its capabilities. Several tutorials present the program's menu options and tools in step-by-step format. Another group of tutorials provides examples of GeoGebra learning activities in major math content areas. These tutorials are intended as a visual supplement to printed guides and documentation. GeoGebra users can find a wealth of guidance and examples at www.geogebra.org. A web search such as "GeoGebra Pythagorean Theorem" will yield hundreds of additional articles, examples, and applets.

Gapminder is a browser-based application which presents international statistics (relating to health, wealth, population etc.) in a highly interactive graph. The aim of Gapminder is to promote a fact-based world view through increased understanding of socio-economic data.

These pages demon­strate vi­su­al phe­nom­e­na, and »op­ti­cal« or »vi­su­al il­lu­sions«. The lat­ter is more ap­pro­pri­ate, be­cause most ef­fects have their basis in the vi­su­al path­way, not in the op­tics of the eye.