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!
Great reference card for chemistry and physics students.
Build a model green house and 9 other green energy-related devices with this great kit!
Check out this high-quality gyroscope!
See the solar system in action!
This mirascope creates a 3D hologram image!
Perform awesome experiments using everyday materials found in any kitchen!