Features: brand new and high quality Explore the wonders of science through a hands-on science experiment. This kids experiment set will satisfy you little budding scientists' curiosity, open their horizon, find a brand new world and have great fun in spare for time. A sense of accomplishment inspires children's thinking and lays a solid foundation for their future. Fill a plastic bottle with 3/4 of water, and then push the two plastic bottles to the faucet connecting pipe, and then the bottle with the water up, hold the tornado connector and shake it in a circular motion 4-5 times, then You will see the water in the bottle spin. Through the use of tornado toys, preliminary observation and understanding of the formation and phenomenon of tornadoes, etc., can help improve children's intelligence and stimulate their deep interest in nature, geography, physics, meteorology, science and other subjects. It is for ideal for schools and families Experimental tools. Specifications: Material:Plastic Size:Approx.35cm/13.78in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package includes: 1 Piece Tornado Maker Science Kit