This website addresses the research of Bruce Donald's lab at Duke University in the use of Physical Geometric Algorithms (PGA) to better understand computational molecular biology. Researchers can find information on...

PBS presents this game in which students are asked to rearrange and rotate a set of geometric shapes to form the image of a rabbit, candle, fox, and others. Tangram "is an ancient game that originated in China" and it...

Interactivate, Shodor's "set of free, online courseware for exploration in science and mathematics" presents this activity to teach students the geometry concept of tessellation. The java-based activity allows students...

Presented by Utah State University, this interactive online math lesson teaches students about geometry and tessellations by "using regular and semi-regular tessellations to tile the plane." The java-based activity...

Written by J.A. Bondy and U.S.R. Murty of the Pierre and Marie Curie University in Paris, this online 270-page textbook presents graph theory and its applications. The topics covered here include connectivity,...

Presented by Robin Thomas at the Georgia Institute of Technology, this page describes the four color theorem of graph theory. The page gives a history of the four color problem, the reasoning and outline of the proof,...

This website focuses on “magic squares” and their mathematical significance. Magic squares received their name because there are so many relationships between the sums of the numbers filling the squares. Students...

Written by Desh Ranjan of New Mexico State University, this page remembers Frank Harary, "widely recognized as one of the pioneers of modern graph theory." Here you will find a brief biography of Harary along with a...

From Dr. Christopher P. Mawata at the University of Tennessee in Chattanooga comes these graph theory lessons. 23 full lessons are given here on topics from Adjacency Matrices to Laces to Weighted Graphs. There is...

From the Graduate Texts in Mathematics series comes this textbook on graph theory by Reinhard Diestel from the University of Hamburg. Topics covered include flows, planar graphs, infinite graphs, and Hamilton cycles. ...