This is my simple EV3 robot design. It is very quick to build, uses very few pieces and has interchangeable attachments. This makes it very useful in a classroom setting. My Classroom Resource book - Classroom Activities for the Busy Teacher: EV3 utlisies it thoughout all the lessons.
If you do end up using this design in class, please let me know, I love to hear how far and wide throughout the world my design travels :)
Huge thanks to Bill Bourn for taking this design and importing it into LEGO Digitial Designer. Download the .lxf file here -> Kee_s Riley Rover bot EV3 with gyro over drive axle.lxf
If you have the EV 3 Home Kit (31313), then Joe Meno has adapted the RileyRover into the RetailRover which utlisies the parts of the EV3 Home Kit. Download it here