1. Label dish: a. Where: Bottom side. i. What: Name, Date, Period. b. Where: Bottom i. Split dish in ½ ii. Label ½ with “D” – dirty hands ii. Label ½ with “C” – Clean hands 1. Hypothesis: a. If: b. Then: c. Because: 2. Wipe bacteria from dirty hands on ½ the trey with the D. 3. Wash hands with warm soapy water. 4. Wipe finger across the clean side of the trey on the C side. 5. Close + Tape 6. Incubate upside down
Big Question: What caused the clumps or “colonies” of bacteria?
Observations:
1. What did you see? 2. Was it what you expected? Microscopy: