Learning about time is fascinating! Hourglasses also cause incredible emotions in children, so a combination of learning about and having fun is the best solution. The set consists of 4 hourglasses. Each of them has sand of a different color, and counts down a different distance in time. Hourglasses can be used to make the child aware of how time passes and what the units of timekeeping are, and to perform activities on time. They make learning much more enjoyable.