 After producing all the tickets, the researcher will return to the classroom to distribute the accelerometers to the next batch of users. Once the thank you vouchers and accelerometers have been sorted out, the draw will finally take place in the classroom. A ticket will be picked out of a black string bag, probably by a school staff member of by the researcher. Depending on parental choice specified on the consent form, the incentive scheme voucher will be provided to the winner straight away, or will be left in the school office for later collection by the parent. The class score graphicchart will be put on display on the wall. 