Geometry app three suggestions

[parisse]

eried, my main point is that you will never be able to do the same "with the mouse only" than with a combination of commandlines. For example with the prime you can not illustrate the Moivre-Laplace theorem (http://en.wikipedia.org/wiki/De_Moivre%E...ce_theorem) except with commandlines in the geometry app, despite the fact that it's an important topic in the highschool math curriculum (in France at least). With a mouse only approach you will only be able to do what the designers have designed to do.
I'm not against easy to use helpers to enter commandlines, and that's exactly what the PLOT view of the geometry app provides, but commandlines are not restricted to batch use (and by the way a dynamic geometric construction *is* a batch script), they are an essential component to learn when using a CAS as well as a first step to learn programming, for me it should be mandatory to teach commandlines in any scientific curriculum. And it would have nice side-effects for maths, because it would make students think a little more to things like implicit multiplication, operators priority, function/value of function, chains of implications, ...