Mathematics and ink combine in this fun set of math-related tattoos. More than 40 math tattoos on two sheets allow you to display math puns, equations, and math icons in a unique way. This makes a great stocking stuffer, novelty prize or birthday gift for the math nerd in your family.
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
Create beautiful art with this amazing sun paper!
This classic device is used to demonstrate the conservation of mechanical energy.
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
The large realistic model has removable organs that can be studied and set back into the correct position.
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.