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"if i listen i forget, if i see i remember, if i do i learn"
-------Montessori
Product material: Wood and electronic components
Product size:8*5*18cm
Suitable age: over 7 years old
Principle of work:The ball floats in the air and does not fall off. The fast flowing air produces a low pressure. The faster the air flows, the lower the internal pressure. The low pressure acts like a whirlpool. It sucks the ball in the center of the air flow. When the ball falls from the side, the vortex sucks it back again, so if you move or tilt the model slightly, the ball also not fall.
Note: The price is for 1 set, battery is not included.