"Matthias Berth" <matthias.berth at googlemail.com> wrote in message

> it will go in a circle.(you ´can put the pen down to see the trace)
> Let the kids try that for different speeds and angles - it is always a
> circle. WHY?

> Make two mice, one moving in a circle, the other one just moving
> towards the first (chasing it). Watch the curves that the second mouse
> draws.

Nice, thanks for the hints.

Any thoughts on pros/cons of Scratch vs. eToys?

Sophie