These 1/4 inch thick glass plates are ideal for testing the hardness or softness of minerals. By scratching the mineral in question against the plates, students or teachers can determine these properties by observing the quantity of residue left behind. Excellent for use in the classroom, or at home for aspiring geologists.
A combination of three of our great discovery toys, all in one package!
This caffeine molecule mug makes an excellent gift!
This plant and animal cell model activity set is a must-have resource for the science classroom!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
This classic desk toy will keep you amused!
Comprehensive collection of 30 fossils.