I thought someone here might be able to help me with this. As some of you recall, I teach hands on science in a summer program, and I have started working on it. It's time consuming but fun, fun, fun.
Anyway I am going to do a Mar's Explorer "camp" program. I plan to do things like the egg drop, various mapping activities, hydroponics, a simulated Mar's mission (this was great fun last year), etc.
Quite a number of years ago I saw an activity for kids where they tried to show them the problems of communicating from the Earth to Mars using a RV car, a simulated landscape. The thing that was quite neat was there was a short time delay on the car. It made doing this frustrating and very interesting.
I have no idea how to do such a thing. I found a site where someone had rigged a video camera to a RV car. It sounds neat but the video equipment might not be available.
Basically what i was thinking of was something a bit simpler (if it could be done) and that is taking a regular RV car from Radio Schlock (perhaps with a bit of a Martian redesign

I'm not very good at it but I can work a soldering iron and so on.
BTW, I know there is a way of simulating this, but I might try this if it were doable. ? Perhaps if it isn't too hard, I could bribe my nephew for a couple large pizzas.
--des
