Function to value, value to function. Get big values with functions we deal with in middle and high school math! It's a great way to learn, and you'll definitely exceed 70 deviation in math!...maybe. You can also play offline. Game Flow -Tap the blackboard to increase the value. -Purchase functions with the increased value. -Purchase a larger function with the increasing value of the function. By repeating these steps, the goal is to achieve a huge value.