Observe a 'water tornado' or whirlpool in a bottle.
DIY a marvelous water fountain.
Create your own handmade thermometer!
Contains: One set of plastic frames & attachments. Two pipes. One joint tube. A packet of small styrofoam balls/pellets. 2 packing rings. Two bendable straws. One set of transparent stickers. One set of graded scale card (for the thermometer)