Pipetten 4 stuks Build a sample map (good Build a sample map (good for developing spatial orientation) or just make it up yourself Dit helpt bij de ontwikkeling van polsbewegingen en krachtdosering op een visueel duidelijke manier Squeeze the ball and let go gently with the dropper in the liquid to suck up and squeeze the ball again in a measured way to put the right amount of liquid in a jar or bowl but also how to adjust the right amount of force and direction