Khanacademy is a website where you get do practice your math. You can do math from Elementry School math to College math. You can also watch videos to help you understand the different kinds of math you don't understand. If you want to tell your teacher about this and have him/her register, then they can become a coach. If your teacher has registered and become a coach, you can register and have them be your coach. When you register and want to have a different avatar than what the start you out with, here are steps on how to get a diffrent avatar:

                                                 1. look at the right hand side (top) and you will see your e-mail

                                                                (by the way you need an e-mail for this website)

                                                 2.  click your e-mail

                                                 3. then click the green leaf

                                                 4. choose your new avatar

                                                 5. click the little gray X at the top right corner