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Tool: Marble Mania!
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Go to: http://www.sciencenetlinks.com/.../marblemania.html (opens a new window)
Description:

This is an interactive activity in which the randomness and probability of marbles being pulled out of a "bag" are calculated automatically and for trials up to 500. In short, students will be able to see how the experimental probability more accurately reflects the theoretical probability when larger numbers of trials are conducted (as compared to a few).

The Marble Mania screen has three main sections, one on the left side of the screen where students can choose the number of different colored marbles in the bag plus the number of marbles to draw and the number of trials to run. The right side of the screen has two sections. The top section graphically shows the number of times a certain color was picked (either as a bar or pie chart), while the bottom section depicts the frequency.

Technology Type: JavaScript 
Author: Science NetLinks
Language: English 
Cost: Does not require payment for use

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Courses: Math 3 Probability
Math 4 Probability
Math 5 Probability
Math 6 Probability
Math 7 Simulations, Experimental probability, Theoretical probability

Teacher Review (Not based on classroom experience)
Reviewer: Hope 1, Jun 10 2008 04:27:46:273PM
Appropriate for: practice of skills and understandings
Ability to meet my goals: Neutral
Recommended for: Math 3: Probability
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