In this video, Ashley talks about forces (balanced and unbalanced) as well as inertia. She demonstrates some simple activities so you can learn about forces first hand.
Put your hands together and push them towards each other with equal force. What will happen? Nothing as forces are balanced. Now try exerting more force with one hand. The resultant unbalanced forces will cause a change in motion.
Try another activity! Start rubbing your hands together, you will notice your hands will start feeling warmer. That is because of friction -the resistance to motion of one object moving relative to another. The video also explores Newton’s first law of motion using cool illustrations and activities. Pause the video and try the activities yourself. In the end, Ashley recaps all the concepts to help students remember them better.
This video satisfies the 3-PS2-1 requirement for third-grade science proficiency.
Students who demonstrate understanding can:
3-PS2-1. Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.