Laboratory quality cover glass slides.
Build your own 10 inch kaleidoscope with this great kit!
Working model representing the sun, earth, and moon and their relationships.
This microscope is so versatile you can even take it with you on a job site!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Build a hand that realistically moves its fingers using shape memory allow technology!
Create all kinds of marble run combinations with this 80-piece Marble Run set!