After filling out the registration form, you are now ready to start learning: Go back to Khan Academy
. Click on “Courses” in the top left corner and under “Math by grade” select the grade that you are going into next year (i.e. 2020-2021) and start earning points.
For example, if you are in grade 4 right now, the math challenge is for you to finish grade 5
Further information about the challenge including prizes can be found here