CPO Science Link Simple Machines Teacher's Guide with digital access helps to engage your students and boost their understanding of key concepts. Simple Machines includes the CPO Science Ropes and Pulleys, Gears, and Levers. In the Ropes and Pulleys investigations, your class will explore the principles of force and work as they discover how to arrange the strings for increased mechanical advantage. In the Gears investigations, important ideas such as ratios, angles, and the geometry of the circle become "real" to your students. Through the Levers investigations, students easily derive the relationship between force and distance on a lever. Three-levels of hands-on investigations, classroom-tested equipment, tablet-enabled learning experiences and online multimedia content make it a powerful tool to enhance student understanding. It contains five tablet-enabled investigations that are powered by Exploros. This module also supports STEM activities and includes a Simple Machines-building kit. Students research, design, test, and refine a model of a Simple Machines and apply the science concepts they learned in earlier investigations. Through curiosityplace.com, you can access digital teacher's guide, answer keys, equipment setup videos, whiteboard resources, student assessment sheets, student investigation sheets, student readings, skill and practice worksheets, science content videos and content animations. It meets MS-PS3-2, MS-PS3-5, MS-ETS1-2, HS-PS2-4, HS-PS3-3, HS-ETS1-2 NGSS performance expectations.