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.
Watch this laser pointer emit a cool purple beam!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!
Use this kit to introduce electromagnetic principles in the classroom setting!
This advanced physics kit is perfect for older children already versed in physics knowledge!
Dig deeper, and discover the fascinating crystal structures of minerals and rocks with this great kit!
See the constellations visible in the Northern Hemisphere on this watch!