### Overview

For this activity, each student will choose an image that depicts Newton's third law and add a hashtag to accompany the image. Then, each student will choose a peer’s image and explain how it represents Newton’s third law.

### Objectives/Goals

- Examine and explain evidence of Newton’s law.
- Identify real-world problems with solutions that require an understanding of the direction of energy by forces.

### Procedure

Work with students to determine an agreed-upon explanation for what they saw happen in the videos. Then, move to slide 8. Explain that for every action there is a reaction, which is referred to as Newton’s third law. Have students contemplate some other scenarios in which they’ve seen the same type of collision.

Go to slide 9. Invite students to use the Pick a Pic (links to an external site) strategy to find an image that shows a reaction similar to the ones seen in the videos. Have students add their pictures to Padlet (links to an external site) or the Slide Padlet (links to an external site). Once the discussion activity is set up, share a link to the activity in the Pick a Pic (SF) page. Then, invite students to add a hashtag to the picture that describes what it is about (for example, “#carcrash”). Give them about 15 minutes to do so.

Next, introduce students to the Gallery Walk (links to an external site) strategy. Invite students to take part in a virtual Gallery Walk of their classmates’ pictures in Padlet. Students should choose a picture that hasn’t been selected by another student yet, add a hashtag caption, and explain how it reflects Newton’s third law. Allow about 15 minutes for students to do so. Then, review the Gallery Walk activity with students.

#### If Teaching Asynchronously:

If students are completing on their own, have students include a date & time for their initial image posts and as well as for their peer response posts. Be sure to have students add their names or initials next to their posts and peer responses. For an Honors class, have learners include what safety measures are being used or could be used to help minimize the effects of the impact.

(To use the Padlet application in the following activity, log into the site and prepare a Padlet board for your class. For further instructions, see the K20 Center’s Padlet Tech Tool card (links to an external site).

If using Padlet is not a good option for your class, you may choose to use the Discussion Group Slides, adding slides if necessary.)

Available is a K20 tutorial on how to use Padlet.