Many links to Don on these pages are incorrect because he changed his website URL to www.mathman.biz
(you might see Don's old URL link: shout.net/~mathman, which doesn't work)
Links to Don could be under different categories, like: fractions, Mathman, Don Cohen, sample problems, calculus for young people, iteration, patterns in mathematics, Sheri finds the volume of a pyramid, cookie-sharing...
Order Don's 1 DVD set with all his materials, @$70.95,
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To other countries email for shipping and handling.Don's 1 DVD set Calculus For Young People, ISBN 9780977949311, is now listed on Google Book Search
Don will only use PayPal checkout now
Internet links to Don's website and references to his books from around the world!
Links from U.S. sites:
SDSU Web Resources for Teachers
Links from sites outside the US:
CANADA Hoagies gifted- products
References to Don's books: