Roll the balls to the little "shelf" on the right and left side of the toy!

The task is quite easily managable if you put the balls to their places one-be-one. It seems difficult only if you want to accomplish the whole exercise at once. There are more than one way to start. Try to use the centrifugal force appearing while rotation is going on. Rotate-shake quickly the tool along its vertical axis, and observe how thanks to centrifugal force, balls get more and more distant from each other. After a longer period of exercising you will make it. Pay attention not to change the axis of rotation!

The other method maybe needs even more tenacity. Put one ball to its place. After doing this, gradually – with smooth moves – move the toy horizontally right and left. The ball will move with greater and greater amplitude. When it gets almost to the shelf, move the toy downwards suddenly, so that the ball could "jump" to its place. While doing this, you should take care that the other ball already put to its place does not move.