Teaching science can be expensive! To help address this challenge, I have compiled this list of free and low-cost resources as well as ways you may be able to locate free materials in your area, such as lab equipment, fossils, models, and chemicals.
The list includes how to get free and low-cost supplies for:
Biology/Life Sciences
Chemistry
Physics/Engineering
Geology/Earth Science
This list will grow, so be sure to follow me on Teachers Pay Teachers for updates.