Underground Mathematics is a UK-based resource for mathematics instructors. Although this website is especially designed to help prepare students for their A-Level exams, it also hosts resources that will be of use to anyone around the globe who teaches algebra, geometry, trigonometry, or calculus. Created by a team of math educators and scholars at the University of Cambridge, Underground...

Based at the University of Delaware, this set of peer-tested and vetted educational resources asks the important question: "How can I get my students to think?" Their educational philosophy places a premium on problem-based learning (PBL), which is an instructional method that asks students to work cooperatively in groups in order to seek solutions to real world problems. First-time visitors can...

The University of Michigan Library offers this helpful list of web resources for teaching mathematics. This list includes items that will appeal to K-12 mathematics instructors, adult educators, and college level mathematics instructors alike. Resources are divided into three categories: resources for teachers (most resources fall into this category), resources for algebra, and resources for...

The University of Minnesota Geometry Center is a mathematics research and education center that supports math and computer science research, mathematical visualization, software development, application development, video animation production, and K-16 math education. The website describes some of their projects that use technology to visualize and communicate mathematics and related sciences....

Unions, intersections, and differences: This can all be quite confusing to students trying to enter the potentially tricky world of Venn Diagrams. Fortunately, Alfredo Jiminez of Pennsylvania State University, Hazleton has created this handy Flash-enabled teaching application designed to provide students with an engaging way to learn about this subject. The project is party of the Digital...

Visual Fractions is "a tutorial that offers instruction and practice in identifying, renaming, and operating on fractions" and was created by Richard E. Rand. The website reviews examples of fractions, which are modeled with number lines or circles. Throughout the website are instructions to follow, encouraging students to try a few activities on their own. For a more light-hearted approach, Rand...

The What Works Clearninghouse was established by the U.S. Department of Education's Institute of Education Sciences "to provide educators, policy-makers, researchers, and the public with a central and trusted source of scientific evidence of what works in education." The What Works Clearinghouse (WWC) has posted the results from its review of “interventions based on a curriculum, which contain...

The online math center at Whatcom Community College is intended for a range of audiences, particularly students looking for additional assistance on a variety of math subjects from geometry to calculus. The materials offered here are divided into five areas: Learning Math, Teaching Math, Math Resources, Calculators, and Math Events. This first area offers visitors a look over high-quality links to...

To experience the world of fractals is quite a treat. This wonderful application allows visitors the opportunity to explore fractals by continuously zooming in and out around their various forms and manifestations. XaoS can display a wide range of fractal types, including Mandelbrot, Phoenix, and many more. The site includes a number of tutorials, complete with information about how the program...

The goal of the Yale National Initiative is to "strengthen teaching in public schools", which it tries to do by encouraging the formation of new Teachers Institutes throughout the United States. Their website includes a link to the "League of Teachers Institutes", as well as their "League News". The newsletter of the Institute can be found under the link "On Common Ground", and it includes an...