Day 50: Mirror Maze Quiz

Thursday, 24 October 2013

The mirror maze quiz question builds on work done in the lab. Logistics: give students a protractor and paper only. Ask them to bring you the paper when they’ve completed the problem. You set up the mirrors on their indicated lines and turn on the laser. My purple marks on each page shows the actual path the laser took through the bullseye. Here’s an assortment of student work on the mirror maze problem.

2013-10-28 10.07.27

This kid gets the law of reflection and provided a well-labeled diagram.

2013-10-28 10.19.31

Another excellent solution, though due to several inaccurate measurements, is a little off-target.

2013-10-28 11.19.11

This student doesn’t understand the problem statement and instead assumes two parallel mirrors are necessary.

2013-10-28 11.18.09

This is what happens when you mis-apply the law of reflection — look at the reflection from the lower mirror.

Have I mentioned this is my favorite quiz of the year?


One thought on “Day 50: Mirror Maze Quiz

  1. Pingback: Day 51: A Repetition | Physics180

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s