Visit www.parallax.com or https://www.parallax.com/education/teach-scribbler-3-robot and check out this amazing new robot. The new S3 promises to be a goldmine for robotics and programming education.
It is hard to understand at first glance how many features and how much versatility is build into this new robot - from the hardware itself (including the new exposed hacker's port) to software programming interface - GUI (for Windows), BloclyProp (developed with Google's Blockly and web-based), and the Propeller Chip's native Spin (with IDEs for many operating systems).
I have been working with the S3 for a while and it is a truly worthy successor to the Scribbler line. I have them all and have or will eventually teach with them all - I will be conducting a workshop soon with some local educators (more on that later).
I challenge you to find a better platform for getting students and hobbyist evolved in robotics - especially at $179 price! Get one and then meet me or any of the other friendly folks on the Parallax Forums - forums.parallax.com or at Parallax's Education Resource page - learn.parallax.com or contact me directly - I'll answer any question I can or promise to find you an answer. I am absolutely sold on this little green bot.
Most of all, have fun and learn something new! What a wonderful hobby! Join me and others as we inspire a new crop of roboticists, engineers and programmers - maybe even a priest or two!