A Sphero is a spherical robot toy. It is a white orb wrapped in polycarbonate plastic, capable of rolling around, and controlled by a smartphone or tablet, into which movement instructions or coding is submitted. The students of 3/4G in groups, designed and built small circuits from masking tape and paper on the classroom floor and then programmed their Sphero to complete their circuit. As the session went on, each group was encouraged to take their Sphero to the circuit of another group and to re-code their device to successfully negotiate the different track. How time flies when you’re having fun!