The automatic yo-yo is here! Featuring Auto-Return Technology, Reflex™ automatically returns to the hand without having to tug the string! Utilizing a centrifugal clutch, Reflex returns automatically when it reaches the end of its spin. Reflex is a take-apart design featuring a high speed trans-axle for longer spin time, light-weight body, and a wide string gap that makes learning tricks easy! This model is perfect for beginners; Reflex is often referred to as a 'yo-yo with training wheels'!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
This is a great clean heat demonstration model for the classroom setting!
With 23 hands-on experiments, you can investigate specific weather phenomena as well as the climate system in general.
Build a model car that runs on hydrogen gas using a unique reversible fuel cell!
Dig deeper, and discover the fascinating crystal structures of minerals and rocks with this great kit!
Do micro-controller projects and program them using your own computer!