Fundamental forces, unseen yet felt in every moment of our existence, govern the interactions ofmatter and energy that in turn shape our lives. By understanding these forces, we create a foundation that supports doing and understanding modern science and technologies. Why do clothes sticktogether when they come out of the dryer? How is it that a tiny spark can trigger an explosion?Working from these and other questions, students start their explorations by asking their ownquestions and discussing what they already know. They observe phenomena, engage in hands-onactivities and use online simulations to collect evidence. From their evidence, they construct mentalmodels of the forces that drive interesting phenomena and test their models by predicting futureevents.The Interactions course introduces students to science as an endeavor, a process we engage in,rather than solely a set of discoveries by others. Through engaging in modeling and scientificexplanation, students explore curious aspects of the everyday world, discovering how the unseen world of atomic level interactions and energy transformations are responsible for much of what weobserve in the world around us.Interactions AB meets the Grades 9ā12 District physical science requirement. Students mustcomplete one physical and one life science requirement. This course meets one year of the University of California āgā entrance requiremen