We will be performing scheduled maintenance on the site beginning Thursday, May 25th, 7:30 pm CT. We expect to be completed and access restored by 9:30 PM CT. We apologize for any inconvenience this may cause.
Welcome to FOSSweb
The Full Option Science SystemTM website
FOSSweb is the official website of the active-learning science program, FOSS. Explore resources for educators and engaging activities for students and families.
To get started, log in or visit as a guest. Students need a class login from their teacher to access all resources.
Learn more about the FOSS active learning philosophy, how it helps your students learn to think like scientists, and why FOSS is the right choice for your school.