A virtual spinner can be adjusted to have any number of sections of any size. It can then be spun any number of times in increments of 100,000.

• Box Model
The applet permits creating a box of up to 16 colored cubes including the possibility of duplicates. Cubes can then be drawn at random (with replacement). A bar graph shows the results that can be compared to the theoretical results.

• Coin Tossing (NLVM)
A single coin can be "tossed" any number of times. The results are shown in order, which can help with the concept of randomness. A bar graph shows results.

• Elementary probability
This site is considered a resource for elementary school teachers teaching probability in the elementary classroom. The site is organized by grade level with background information and lesson plan ideas for each grade listed.

• Experimental Probability (Shodor)
A spinner can be created with up to four regions or two number cubes can be made with each side adjustable from 1 to 6. The devices can then be used in experiments.

• MathGoodies.com
This site provides links to many lessons on probability. Includes lessons using spinners, dice, etc., and provides teachers with full lesson plan ideas to use in the classroom.

• Probability Resources (Math Forum)
Links to hundreds of articles, lessons, and applets related to probability.