Vortex Bottle Connector for Tornado in A Bottle Classroom Set of 20

View your very own tornado! These simple-to-use connectors enable you to join two bottles together to form a vortex which mimics the behavior of a tornado, allowing for safe, close-up observation. The set includes 20 connectors and a full lesson plan, making this product excellent for science teachers, especially elementary level. Kids will have a blast creating their own tornado and learning about the nature of vortexes.

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