Learn about gravity with the PlanToys Land The Planet game. Players control a marble along the steel rods by closing and widening the gap between them and steering over planets to let the marble fall into the correct spot. Players can control the speed of rolling marbles by adjusting the width of the rails. Children can learn planning, cause and effect, and problem-solving skills. You can also use the board as a matching puzzle game by placing different planet pieces into the correct spots. Every piece has a number on the other side as a point. This set includes a marble and a solar system board consisting of the Sun and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.