Calculus – The Brain Trainer.This brain game gives you:Memory, attention, and math skills improvement.Speeds up your ability to perform calculations right and quickly.Improves your focus and concentration.Your goal is to calculate the flying numbers at given time.Each new level gives a new challenge to your brain cells.Boosts your overall mental power and performance.So take your brain cells for a walk and give them some exercise. Tags: mathematics, math workout, IQ trainer, brain training, brain games, brain game, brain trainer, math trainer, IQ games, math games, brain exercises, math game, IQ test, mathematics, mind game. brain puzzle, free puzzles, game for kid, smart games, IQ tests, calculation game.