Provide hands-on activities for practice and mastery. Check for understanding of concepts and skills by using relevant standard materials, i.e. worksheets, text problems, workbooks, teacher prepared exercises, etc.

Nail Balancing Experiments; scientific experiments; worksheets

Objective: To practice concepts of product-moment force.

Activity:
1. Students balance 15-20 16d nails on the head of one 16d nail which has been pounded into the end of a 15 cm-long piece of 2 x 4.
2. Students use scientific company ordered equipment as follows: meter stick, weight hangers and weights, fulcrum (pivot) point, and teacher establishes a work sheet for students to determine product-moment force when given some variables (unknown mass).

Assessment: 1. Accomplishment of nail balancing with appropriate written analysis/interpretation of WHY. 2. Accuracy in completing teacher-assigned inquiry/guided discovery lab worksheet.