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 60 projects with this deluxe version of the Snap Rover kit!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
This kit includes several different projects that demonstrate the power of magnets!
A combination of three of our great discovery toys, all in one package!
This kit focuses on teaching children about electricity and how electronic devices work!
This superb chemistry set features 350 mind-boggling experiments!