The 12 Game is a card game in which each card has 3 numbers which the student must combine to arrive at the number 12 using only the four basic arithmetic operations. This is good practice for improving a student's number sense, and would work well at a math station. The PDF file contains 18 levels of increasing difficulty with 8 cards in each level. This game is designed for students who are not yet ready for The 24 Game. Available at Doctor Bob STEM-Ed.