Physics 9 is a laboratory science course in which students develop skills by conducting experiments, working collaboratively, and solving problems that allow them to understand and describe the physical phenomena of the world around them. Through this course, students will explore the major themes of motion, forces, and energy. Students will uncover each physics concept through a hands-on discovery process in which students investigate qualitative and quantitative scientific trends in the laboratory, discuss and argue experimental results to build a class consensus, and collaboratively develop and hone conceptual and algebraic models of the investigated phenomena. Throughout this course, an emphasis will be placed on representing our understanding in multiple ways: verbally, diagrammatically, graphically, and algebraically.