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Part of the Virtual Laboratories in Probability and Statistics. This link is to the extensive expository material which in turn links to associated applet material.
Links to an interactive text with succinct explanations for probabilities for all nine possible five card poker hands.
This short article gives Pascal's triangle for generating binomial coefficients (based on the standard identity) as well as the Galton board.

This is a nice short article on combinations, permutations, and the difference between them.

A discussion of the birds on a wire problem with a list of print references for severaal versions of the probem statement.

An explanation of the birds-on-a-wire problem is given. A number of birds randomly land on a telephone wire.

This Java Applet demonstrates the Normal approximation to Binomial distribution. A "Begin" button on the left starts the applet. Browser is required to support Java 1.1+.
The lesson begins with a definition of a "complex" fraction and then presents a procedure for simplifying them (multiplying the numerator and the denominator by the lcd of all fractions contained

In science, students often start their graphs at an origin other than \((0, 0)\). Also the scales are often very large or very small and variables, other than \(x\) and \(y\), are used.

This link takes you to the list of capsules in Theoretical Issues under One-Variable Calculus within Classroom Capsules and Notes.