This Adjustable Focus Red Laser Pointer allows the user to adjust the diameter of the beam by simply turning the aperture. This Adjustable Focus Red Laser Pointer is for presenters, medical practitioners and trainers.
This plant and animal cell model activity set is a must-have resource for the science classroom!
Build over 60 projects with this deluxe version of the Snap Rover kit!
Build a hand that realistically moves its fingers using shape memory allow technology!
Build your own windmill generator kit by recycling a plastic bottle!
Build a magnetic levitating train with this science fair project kit!
The large realistic model has removable organs that can be studied and set back into the correct position.