Students can answer questions at any time during the period of the contest. That means at school, or at home.
Note: Only those questions answered while a Sumdog Maths Contest is selected as the chosen activity will count towards the contest score. If a student has been answering questions that are not part of the contest, they will not be added to the contest score. It’s still a great thing to see though!
Once a contest has started you will be able to view the contest leaderboard. You can find out more details here about how to view the contest score for your own class.