TeachersFirst Edge entry: no special skills needed, just a little willingness to "play"! This product-in-development (beta) is an online vector drawing/technical drawing tool for geometry, science, engineering, and more. Vector drawings are far more precise because they are based on mathematical formulas (which you cannot see, of course), instead of the "little boxes" of pixels. Free membership allows you to save and re-access drawings later, all via the web. You can also export drawings to be saved on your own computer is several file formats. The drawing grid allows you to make floor plans, circuit diagrams, flow charts, project mock-ups, or simply demonstrate geometry concepts. Our editors noted that the way to make a shape "no fill" is to set its transparency to 0.0. A little experimentation will help you figure out the drag and drop tools. The tool works best in Firefox 1.5+ or Internet Explorer 6+. Editors' note: we tried the "upload an image" feature and found it "glitchy." You should not count on that feature.
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