Rice University: Cynthia Lanius: Visualizing an Infinite Series

For students who have ever played dominoes and Tetris, polyominoes will strike them as a great deal of fun. Teachers will see the educational benefits of working with similar and congruent shapes and rotating them in a plane. Exploration...

An introductory look at the interactive Geometer's Sketchpad in terms of using it to explore rotations, translations, and reflections. Only a beginner's amount of skill with the program is needed. Exploration questions are given for the...

This site may be used as a lesson for understanding graphs of functions and goes into slopes of a curve. The site helps students notice when a slope of a curve is increasing and decreasing and general interpretations of graphs.

This site provides a lesson on finding possible irrational numbers using a geoboard.

This site introduces students to the definition of golden ratio. It gives them a chance to estimate ratios and predict which figures are closest to the golden ratio. There is a link on this page that provides charts for students to...

This site is a lab sheet that students can use to explore the golden ratio. It also has other informative links on it.

An example problem in Spanish of interpreting a graph. Gives the student many questions to think about, including slope and if the graph serves as a function. Does not offer solutions or answers. Includes link to the English version.

This site gives a lesson on school bus (Taxicab) geometry. The lesson includes distances and midpoints in taxicab geometry.

Different cultures' contributions to Geometry are discussed.

This site challeges students to find the rectangular dimensions that would produce the cylinder with the greatest volume. The page provides formulas. Students can choose from the following methods to solve: Tabular, Graphical, and calculus.