Required materials for each group:

• red poster paper, approximately 1 m x 1 m
• (alternatively, can use white paper with red drawn outline/coloration, so need a red marker)
• blue poster paper, approximately 1 m x 1 m
• (alternatively, can use white paper with blue drawn outline/coloration, so need a blue marker)
• clear plastic cup filled with ~150 mL of mineral oil
• eye chart (printed on a standard sheet of white paper)
• roll of clear/Scotch tape

Teacher must also have in their possession:

• 1-2 green or red laser pointers (~5 - 500 mW) -- do not hand out to students
• 3.8 L (1 gallon) bottle of mineral oil – will be distributed into small clear plastic cups
• roll of blue or green painter’s tape -- for making finish line on floor for Activity 1
• 2 - 4-meter sticks -- for the class to share during Activity 2

Each student should get:

• A copy of the Atmospheric Distortion Worksheet; can be either hard-copy or a digital editable copy