This comprehensive collection of 30 fossils contains demonstration specimens of animal phyla and plants from the Paleozoic, Mesozoic, and Cenozoic periods.
The collection comes complete with a descriptive key sheet and geologic time chart.
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Learn how solar cells transform light into electrical energy with this great kit!
Command robotic creations with this cool construction kit!
Check out this high-quality gyroscope!
Defy gravity with this cool balancing eagle!
This microscope is so versatile you can even take it with you on a job site!