When used with the Simple and Motorized Mechanisms Base Set, this activity pack gives students a fundamental understanding of simple machines, structures, and mechanisms. Students will investigate the principles of simple machines, mechanisms, and structures; experiment with balanced and unbalanced forces and friction; measure distance, time, speed, and weight; and much more. The activity pack comes in a three-ring binder and provides 30 lessons featuring 37 principle model activities; 14 main activities, each with extension activities; and six problem-solving activities. Also included is a CD-ROM with teacher’s notes, student worksheets, and glossary.