"Martin Eyles" <martin.ey...@bigfoot.removethis.com> wrote in message

> I saw it a few times when I was a lazy masters student, and also in the
> limbo period waiting to do my PhD. The best one I saw was the  one with
> a see-saw and levers, where they tried to use the see-saw and couldn't
> because one was bigger, then tried lifting something, discovered that
> the lever allowed them to move things easier or harder depending on
> where they put the rock pivot. Then they got on the see saw, but with
> the little one nearer the middle, and see-sawed away happily, before
> going home. It was beautiful and fun, and showed simple physics in a
> great way, and one that kids could understand too. Fantastic. Really
> Great Program!!! :-)