Sand hourglasses are a unique and elegant way to tell time. Keep one in your home, office, or classroom, for decorative or practical purposes; this hourglass bridges the gap between the two, and makes for an excellent conversation piece or gift. Parents can use it at home as a method for visibly demonstrating the passage of time for young children. Free-standing sand timer measures 5.5 inches in height and measures approximately 10 minutes.
Great reference card for chemistry and physics students.
Learn about hydrogen fuel cells with this incredible kit!
The large realistic model has removable organs that can be studied and set back into the correct position.
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Use this temperature-controlled soldering station for a variety of soldering applications!
Every kid needs one of these spheres!