Bacteria Says What!

Each group needs:

• petri dish 90 mm × 15 mm
• agar, 10 mL, available online
• spreading tool(s), available online
• permanent marker
• parafilm (to close the petri dish)
• sanitized swabs, 2 per group
• a solution made up of 10% bleach
• titanium oxide, 0.15 mL, available online
• zinc oxide, 0.15 mL, available online
• mini-spoon that holds 0.15 mL
• beakers (or other lab glassware)
• Nano Worksheet (PDF), one per student

For the entire class to share:

• autoclave
• hot plate with stir bar
• incubator
• disinfecting wipes