Each group needs:

• 100-ml beakers (6 per group)
• 20 ml water
• 20 ml ethyl alcohol
• 20 ml clear dish soap
• 20 ml corn syrup
• 20 ml vegetable oil
• What’s Your Angle? Worksheet
• What’s Your Angle? Placemats (3 per group)
• one laser (prefer green laser)
• one protractor
• one ruler
• a dry-erase marker or masking tape (to label beakers)
• safety goggles (one pair per student)