You can use this rubber stopper to contain liquid in test tubes and flasks. Fits tightly to prevent chemical leaks. Highly recommended for use in the science classroom or when displaying a science project!
Build over 100 exciting electronic projects with this easy to use kit!
Easily assemble a working alarm motion detector!
A combination of three of our great discovery toys, all in one package!
Over 300 electronics projects in this kit will keep the young scientist busy!
Build over 60 projects with this deluxe version of the Snap Rover kit!
This advanced physics kit is perfect for older children already versed in physics knowledge!