Don wants you and your child to be successful in using his materials for learning and enjoying the mathematics.

Check out some tips on Don page http://www.mathman.biz/html/tips.html

Check out the mathematics you and your child will be working on, at http://www.mathman.biz/html/whatmath.html

Check out his page On Thinking About and Doing Mathematics

And don't worry about your child making mistakes. The following is a quote in Don's little book, from MATHEMATICS THE LOSS OF CERTAINTY by Morris Kline:

"In his first paper on the Calculus (1669), Newton proudly introduced the use of infinite series to expedite the processes of the calculus...

As Newton, Leibnitz, the several Bernoullis, Euler, d'Alembert, Lagrange, and other 18th-century men struggled with the strange problem of infinite series and employed them in analysis, they perpetuated all sorts of blunders, made false proofs, and drew incorrect conclusions; they even gave arguments that now with hindsight we are obliged to call ludicrous."

If one starts at a young age, working on these ideas, allowing for all the mistakes, one will really understand things better later on. Don has seen children do just that and it has been very encouraging for him. You don't have to feel you need to know everything before the children see the problem. Don feels if he doesn't expect a child to solve a problem a certain way, they will pleasantly surprise him, and he will learn something new!
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