These little robots were my first purchase and after a year, they are still going strong. I love the fact, that, unlike the Bits, they can be programmed through the cloud and change according to the makers' plans. Add the stickers and the decals / head pieces- they have so much storytelling and storyboarding potential. Great use across curriculum and integrated into many lesson ideas. Having access to 12 at a time is fantastic for whole class, across grade and small group work. Their x6 circular powered charger also helps keep them visible and able to be counted at the end of the lesson. WARNING-As they are small enough to fit in a pocket- the routine of counting and charging is a valuable security feature. Though- well worth it in the long run!!