Sums in Space - An Addition & Subtraction Math Game for Kids Kids Solidify First Grade Math Skills with addition and subtraction from 0-9, comparing numbers (greater than, less than, equal to) and learning odds and evens. You Decide - Classic or Co-op rules lets your kids compete in a race to the finish or work together toward a common goal. Co-operative play features 3 difficulty levels to grow with your child and keep them interested over time For 2-4 Players Ages 5+ - A Great Addition for Homeschoolers or School Teacher's Classrooms