Here are some other resources to help you explore your Spheros:
Sphero Education – Everything you need to know to use the Spheros is here, including instructions and lesson plans. If you are using the Spheros, I encourage you to set up an account.
Sphero edu Activities – Here are tonnes of activities for all grades – try some fun ones like the chicken chariot or Martian Attack Math
Activity Ideas with Sphero – This is a free ibook that you can download on a ipad or iphone
http://augmentedrealityineducation.weebly.com/sphero.html – This site has all the lessons off the sphero site nicely organized with ways this teacher used them in her class.