> The most important thing about calculators at K-4 level (AM I RIGHT WHEN I > SAY THAT K-4 IS ABOUT 10 YEARS OLD CHILDREN?) is, in my opinion, that it is > a tool for computing (AND NOT PIMARILY FOR PROBLEM SOLVING!!) that means > that ordinary division, multiplication, subtraction and adding becomes much > easier.
So the ultimate goal is to get computing done ? Then, of course, calculators are grrrreat. But what for children are in this context ? Eliminate them from the picture, hire a few professionals or program a super-computer to do all the computing. It will be faster and simpler. Andrei Toom