You can use this rubber stopper to contain liquid in test tubes and flasks. Fits tightly to prevent chemical leaks. Highly recommended for use in the science classroom or when displaying a science project!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
A beautiful desk toy for your favorite person’s office!!
Build over 100 exciting electronic projects with this easy to use kit!
Working model representing the sun, earth, and moon and their relationships.
Use this kit to introduce electromagnetic principles in the classroom setting!
Defy gravity with this cool balancing eagle!