The Magnoidz Galileo Thermometer science experiment kit allows children to make their own Galileo Thermometer with this fun and interactive kit! Learn how a Galileo Thermometer works by performing temperature, volume, and density experiments! FeaturesEducational Resource Booklet InsideWhats in the box? 1 x large bottle 3 x small bottles 1 x liquid crystal thermometer sticker 3 x glass beads (40 pieces) 3 x bags of marbles (red, blue, green).23cmRecommended for 6+ years