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Coping with equations and other math expressions


Posted on 2nd December 2008 by Judy Breck in Connective Expression and Open Content

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The image with this post is from a video explaining how to deal with brackets in an equation. Frankly, not having had a course involving algebra since 1957 (yes, that’s 51 years) I really loved the video’s explanation, and will be coming back for more explanations. Recently I have been watching physics DVDs about string theory; though the lecturer refers to only a few equations for me to cope with, I am grateful for It is an ideal tool for me to check what I don’t understand in the equations.

The example of the video’s usefulness to me illustrates a key power of online learn nodes: the level of learning difficulty of the tutorial does not restrict the video’s availability to learners of any particular age, grade, or geographical location. I doubt many string theory students in their seventies have used the tutorial on removing brackets in algebraic expression. Most visitors to are probably high school and college students, with a few precocious grade schoolers and forgetful graduate students mixed in.

If I were teaching algebra, I would find a fine source for its lessons, tips, and practice. The delightful voice on the videos is also worth the visit: she sounds like the voice of algebraic AI.

Tools for math operations


Posted on 30th June 2007 by Judy Breck in Subject Sampler

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Go to updated version of this post at

Visit the page here at MIT Open Courseware for digital tools like the one illustrated above. There are more than two dozen tools for topics ranging such as precalculus, algebra and vectors, curves, surfaces and differential equations. Math

Visualizing Basic Algebra


Posted on 29th June 2006 by Judy Breck in Subject Sampler

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algebraic images
Information Aesthetics pointed to this page as and example of visuospatial illustrations demonstrating some interesting properties of numbers. Whatever we call them, these are great images for grasping some mathematical concepts. Math