<p>One problem with teaching subjects like mathematics is that you need to make up a bunch of exercises, make sure they can be solved, etc.</p>
<p>Teachers usually build their lessons around an existing book for this reason. What about using an out-of-copyright text that is avaiilable as a PDF to create a class? Those 1960s calculus/trig/stats books are B&W and don't have web links, but the content hasn't really changes.</p>
<p>Arclight</p>
<div class="gmail_quote">On May 23, 2011 12:09 PM, "Mel" <<a href="mailto:mel@hackersouverts.fr">mel@hackersouverts.fr</a>> wrote:<br type="attribution"></div>