After students have mastered the basics of simple machines, structures, and mechanisms, they are ready to advance with this activity pack. When used with the Simple and Motorized Mechanisms Base Set, this activity pack enables students to get an in-depth understanding of simple machines, mechanisms, structures, and mechanical advantage. Students will explore mechanical advantage, balanced and unbalanced forces, equilibrium, and much more. The activity pack comes in a three-ring binder and provides 20 lessons featuring 38 principle model activities; four main activities, including extension activities; and eight problem-solving activities. Real-life video clips introduce students to the activities. Also included is a CD-ROM with teacher’s notes, student worksheets, and glossary.