What is Force?

This lesson has an emphasis on explaining what is force. It also has an emphasis on explaining how you can see and measure force. For this lesson you need several empty plastic bottles, rubber bands, string, rulers, tape, very light balls, heavier balls, the worksheets that are provided, pencils, optional index cards and optional iPad or tablet. In this 90 minute lesson students will watch a video, do research on a website, do an experiment, record the results of their experiment, and finally will do a presentation to show the class their findings.