This cool new Pi t-shirt features math constant Pi to 100 places and its definition of circumference divided by diameter of the circle.
You will be super-cool when you wear this shirt on March 14th, the Pi day!
On March 14th, people all over the United States participate in National Pi Day, which celebrates the irrational number Pi and encourages funding for math and science programs in schools.
Great tarantula specimen for the science classroom!
Watch this laser pointer emit a cool purple beam!
An ancient toy featuring optical illusion and hands-on fun that never grows old!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!
Build your own 10 inch kaleidoscope with this great kit!