Currently there is a huge barrier to entry for hardware beginners and students: in order to play with hardware, you've got to learn the software aspect first. Airduino solves this by allowing teachers to focus on teaching the hardware aspect of hardware, leaving the software for later. A teacher can write the Arduino code for the program for her lesson, replace actual values with Airduino's special template language, and upload the code to Airduino's website. Then students can instantly use a web interface to interact with the teacher's code without interrupting their tinkering session.
For example, if a teacher was going to teach about how stepper motors work, she could write the Arduino code for a remote control car, replace the car's speed with Airduino template, and her students could instantly start playing with and modifying the program without needing any support from their teacher.