Unite with students and schools from around the world to set a new world record! The Challenge – to correctly answer more than 182,445,169 questions in 48 hours.
The students play against each other in mental arithmetic games. Students may find it captivating to play and compete in real time. Each game lasts for 60 seconds and students can play as many games as they wish. The questions are appropriately individualized to the appropriate age/grade levels. Homeschools are also welcome to participate.