Learn to monitor and control your home & environment with self contained, inter-communicating microprocessors. Arduino / Raspberry Pi Applications include ham radio, robotics, weather stations, model railroading, toys and more. - KK4HFJ
Sparkfun is coming out with a new breadboard that includes a Arduino in a LEGO compatible base. All the ATmega328P and ATmega16U2’s I/O pins are broken out and available. The breadboard has shield compatible pinouts (yes, the weird offset is there). A bit more than you would pay for a Arduino UNO, but the convenience of having a breadboard and complete access to all the pins makes up for it. This is a perfect teaching tool!