Wolfram Research
Wolfram Math World: Graphs
MathWorld.com shows many types of discrete math graphs and provides links to related topics.
Wolfram Research
Wolfram Math World: Closed Set
Site gives four different definitions of a closed set in mathematics. Each of the definitions has at least one link for further clarification. The site also expresses which of these definitions is most commonly encountered.
University of Regina (Canada)
University of Regina: Math Central: Thoughts on Teaching Perm. And Combin.
An article written for teachers with recommendations on how to present permutations, combinations, and the binomial theorem to students. It contains both useful suggestions about order of presentation and many class examples. A good...
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: The Fundamental Counting Principle
Contains a tutorial on the fundamental counting principle that includes many examples and sample problems.
University of Colorado
University of Colorado: Graph Theory Activities
This series of activities incorporates the concept of graph theory into the discrete mathematics classroom. Students work in a group to solve problems using graph theory.
National Council of Teachers of Mathematics
The Math Forum: Math Topics: Topology: Knot Theory
An extensive collection of sites on the topic of Knot Theory. Links to dozens of sites are provided which take the user from the basic definition of KT, through to detailed Applet programs which create knots on the spot. NOTE: Some links...
CK-12 Foundation
Ck 12: Precalculus Concepts 2.0
A complete high school Precalculus Concepts course. Includes 'Related Modalities' for each lesson that teach the same concept in different ways. The text materials follows Algebra II and comes before Calculus or Statistics. The content...
University of Colorado
University of Colorado: Election Theory Activities
A variety of lesson plans offer activities to use when teaching discrete math and election theory. The activities get students involved in group work to apply the concepts.
University of Colorado
University of Colorado: Iteration and Recursion Activities
These discrete math activities utilize the concepts of iteration and recursion. Students work in a group to solve real-world problems.
University of Colorado
University of Colorado: Matrix Model Activities
These activities use matrix theories to solve real-world problems. Students work in groups with hands-on activities.
Other
Lake Tahoe Com. College: Permutations and Combinations
Gives a basic introduction to combinations and permutations, highlighting the ideas of counting using replacement versus without replacement, and when order is important versus when order is not important.
Other
Lake Tahoe Com. College: Fundamental Counting Principle
Explains the fundamental principle of counting, which is the beginning point for any study of counting techniques such as combinations and permutations.
University of Colorado
University of Colorado: Discrete Mathematics Project: What're the Odds?
This is an activity that may be instructive when trying to learn the concept of "odds" and how they are found.