You code a sphero with your chrome book . You can move your sphero by driving,block codes with the colors black,blue,red and green block codes. sphero’s are good for races because when you have the colors you can make color codes that can make boost and more. Ozobots copy directly what you write with the codes so they are neat. Sphero’s don’t go directly were you want them. Ozo bot are bigger and capable for more things because they are bigger. I would rather use a Ozobot because they are faster and bigger.