I'm giving a lecture this week on ballistic angles. I'm looking into how changing the quadrant and tangent elevations of a gun increase/decrease the range, then moving onto angles of projection, jump and other such bits.
I'm looking to make an interactive bit. So far I have the idea of having someone come up and play angry birds (there's an online version) so everyone can see how different angles of departure change the range. Have you got any ideas of something slightly more interesting (firing a tennis ball out of a pringle tube style ideas).