The earth puzzle

The earth puzzle, is a science material that can be used to work with in order to get to know the various layers of the earth sensorially. It encourages sensory activity of sight and touch and the memorisation of the various positions of the earth's layers. The knobs, placed on each joint, facilitate manipulation and help the fine motor skills of the hand, which are useful for correctly gripping the writing instrument. The work that this material encourages stimulates the ability to concentrate. The material is made entirely of birch wood.