Practice finding denominators of equivalent fractions in this math football game for children, 2nd, 3rd, 4th and 5th grades. Math Football interactive online fun game. This game is an interactive online test for children to practice their skills on fractions. Each game has multiple choice answers to problems. These games are suitable homeschool and classroom practice for children in 2nd, 3rd, 4th, 5th, 6th and 7th grades. Click start and begin practicing.