A puzzle designed to assist with the development of a number of essential cognitive skills. It offers an opportunity to develop problem-solving skills, numerical understandings, logical thinking, shape and colour recognition and seriation (a fundamental sorting skill which relates to recognition of relative size and patterns). There is also an opportunity for the development of tower building the fine motor skill involving placing and balancing.Ideas to enhance learning and play:Making a rainbow. Once the colours are learnt then may follow the introduction of the concept of smallest to largest or largest down to smallest. Pick and place the smallest piece of the rainbow. Which piece comes next? Or pick and place the largest piece of the rainbow etc. This cheerful rainbow tunnel stacker in pretty primary colours makes a great toy to inspire open ended, Montessori inspired play. Designed by our skilled toy makers and crafted from solid rubberwood, this toy is designed for endless creative play, for wherever little imaginations take them. Stack then up tall, make shapes, towers, tunnels and towers. It also doubles as a sweet decorative item when not in use.