University of Colorado
University of Colorado: Physics 2000: Temperature and Absolute Zero
A thorough, multipage discussion of color and color television sets that explains how an image is formed on the television using red, green, and blue light. Understandable discussion, excellent graphics, and many interactive Java applets.
TeachEngineering
Teach Engineering: Light Properties
Students learn about the basic properties of light and how light interacts with objects. They are introduced to the additive and subtractive color systems, and the phenomena of refraction. Students further explore the differences between...
Mr. Martini's Classroom
Mr. Martini's Classroom: Big Number Flashcards: Addition Through 99
These interactive flashcards help students add two-digit numbers through 99. The problem changes color with the correct answer.
ClassFlow
Class Flow: Beginning Addition
[Free Registration/Login Required] This flipchart follows the Addition Chapter. for McGraw-Hill for Kindergarten. Use the die tool to determine the first number of your addition sentence and use the paint bucket to color in the cubes....
Mr. Martini's Classroom
Mr. Martini's Classroom: Inequalities: Addition and Subtraction
Students add or subtract two numbers to solve the inequalities on these interactive flashcards. The problem changes color when the correct symbol is chosen.
Mr. Martini's Classroom
Mr. Martini's Classroom: Addition and Subtraction Comparitive Equations
Students add or subtract two whole numbers and compare the solutions using an inequality symbol. The problem on the flashcard changes color if the correct symbol is chosen.
Wikimedia
Wikipedia: Graph Theory
Wikipedia provides an introduction and overview of graph theory. In addition to introducing the basic terms, there are related links to classic problems in graph theory such as the traveling salesman problem and Dijkstra's algorithm.