Christmas games kids puzzles middle school no prep computer Christmas activities: Make practicing percents merry and bright this winter with the Naughty or Nice Digital Math Game! In this holiday-themed, video game–style activity, students solve Grade 6 percent problems to collect festive rewards and discover whether they land on the “naughty” or “nice” list. Designed to make math practice exciting, this no-prep digital game helps learners strengthen their understanding of finding percents of