CK-12 Foundation
Ck 12: Probability: Permutations Grade 7
[Free Registration/Login may be required to access all resource tools.] Recognize and identify permutations.
CK-12 Foundation
Ck 12: Probability: Permutations Grade 8
[Free Registration/Login may be required to access all resource tools.] Recognize permutations in situations where order is important.
Other
Probability Formula: Permutations Examples
Two examples of solving permutation problems followed by five word problems and their solutions.
Wolfram Research
Wolfram Science World: Bernoulli, Jakob (1654 1705)
This site from ScienceWorld provides a brief but factual abstract of Bernoulli's math accomplishments. Links are provided throughout for additional information on related subjects.
Cut the Knot
Cut the Knot!: Interactive Mathematics: Geometry Articles, Theorems, Problems
Contains over five hundred Geometry articles, problems, puzzles, and games. Some sites relating to circles are provided within this list.
Cut the Knot
Cut the Knot!: Permutations
This page defines permutations, offering both mathematical definitions and examples and a practical explanation of how permutations are used.