Just type in x^2-y^2 into Google’s search box and you get the saddle figure – and you can move it around as well! With these types of ready- to -go aids for graphing, anyone can incorporate serious graphics into teaching and learning math. Click on the image to see a “live” version of the surface \(z=x^2-y^2\).
Wolfram Alpha is a free, online, computational engine. It provides some of the power of a computational algebra system (CAS) such as Maple or Mathematica without having to learn the proper syntax. However, it takes a little bit of practice to get WA to give exactly what you want. Here, I’ll give a list of queries that are commonly used… Read more →
There are seemingly an infinite number of free math resources on the Internet. However, very few provide the comprehensive content that are usually found in textbooks. One of these rare sites is Hippocampus. It is part of the Monterey Institute for Technology and Education and provides free multimedia ebooks for a variety of high school subjects and introductory college level… Read more →
By way of Kevin Jarret’s blog on ed-tech, I’m trying our embedit.in, a web site that allows you to embed many types of documents in your web site. Here’s a presentation I recently gave at IMACC 09, a conference of community college educators in Illinois.