This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
Designing a Marble Roller Coaster at Home
A hands on gravity based project shows how to build a marble coaster using pool noodles and recycled materials. It outlines challenges to improve speed height and multiple hills while inviting reflection on physics and everyday gravity. It cites Iowa State University Extension and 4 H programs for learning opportunities and mentions Linn County camps and costs.
MENTIONED IN THIS ARTICLE
U.S
Pennsylvania
Encyclopaedia Britannica
Iowa State University Extension and Outreach
Iowa
Linn County
Extension
Linn
Iowa State University
the Gazette