Show your love by making the red metering liquid boils and raises with your warmth. You could also challenge your student that they can boil a liquid with their bare hands and demonstrate the characteristics of a volatile liquid. A perfect gift for your love one and also an interesting teaching aid. CAUTION: This is not a toy for young kids. See http://funlearners.com for more educational toys, construction toys, teaching aids, maths & science games & experiment sets, board games, puppets, magic and mini toys for goodies bags. $4 DISCOUNT per unit in Dec 2012 only for self collection at 515 Bedok North Ave 2 #01-199 S'pore 460515Delivery charge : S$10 for delivery within Singapore*.Free delivery within Singapore* for order above S$100. *: except offshore islands and Tuas industrial areas. Please email email@example.com or firstname.lastname@example.org for enquiry.