Introduction (Does It Do What It Should) All right, it's time to do one of those reviews that I have done before, but at the same time, give a new spin on it. In the case of Sphero, we like reviewing their STEM products, and we were pleased to review the RVR Plus once again, in combination with their Littlebits Topper Kit. Our Review of the RVR+ Programmable … [Read more...] about Our Review of the Sphero RVR Plus and Little Bits Topper