A unique device for demonstrating tornadoes in your classroom! Simply screw device on plastic soda bottle two-thirds full of water, attach empty plastic soda bottle to other end and swirl upper bottle briefly. Bottles not included.
- Sold as an Each
- Simple, fun way to demonstrate twisting tornadoes to your child
- Easily attaches to a standard soda bottle for hours of fun
- Great for science projects and at home experiments
- Children of all ages will be entertained by creating their own tornado
