This lesson demonstrates how to incorporate requirements of the Next Generation Science Standards (NGSS) into a physics lesson. It uses a discrepant event (phenomenon) to model forces (force diagrams) at work on an object resulting in motion.
The objectives of this lessons are:
- Students will apply their understanding of Newton’s Laws to predict the outcome of a demonstration.
- They will develop a model to explain the cause and effect of two strings being pulled with unequal forces acting upon 2 identical masses.
- They will plan and conduct an investigation to find evidence to validate their claim.
The NGSS Performance Expectations of this lesson are:
- HS PS2-1: Motion and Stability, Forces and Interactions
- Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.
NGSS-Related Teacher Resources for this Lesson
- Written: Teacher Guide PDF format, Word format
- Video: Teacher Guide
- Video: Lesson Presented in Live Classroom
- Video: Interview with Live Classroom Teacher and Students
- Written: NGSS Coaching Template for Teachers Using this Lesson PDF format, Word format
