Each group needs:

• 1 aluminum pie pan
• 1 large stone that fills ~20% of the pie pan; ask students to bring from home during the two weeks leading up to class
• 2 bird feathers, available from hobby shops
• 1 plastic spoon, for skimming oil from the pie pan
• 1 small graduated cylinder, ~20 ml, for placing spoonfuls of skimmed oil/water
• 1 small funnel, for adding skimmed oil/water to test tubes
• 4 oil absorbing cloth pads, for absorbing oil; either cut a big sheet into smaller squares or use cotton balls/pads
• 1 small squeeze bottle of "grease-fighting" dishwashing detergent labeled "dispersant", such as Dawn®
• Oil Spill Worksheet, one per student

For the entire class to share:

• pitchers/jugs of water
• ~100 ml dark vegetable oil in a plastic squeeze bottle; if necessary, oil can be dyed with liquid food coloring
• plenty of paper towels
• 1 large garbage bag, for cleanup