Day 4 – Collecting Data

Do now 1.Turn in your MSP book, variables sheet, and the procedures work from last week (NOT THE ONES FOR TODAY) IN YOUR GROUPS (QUIET TALKING)

Agenda 1.Submit Introduction & MSP stuff 2.Due dates 3.Serial Dilutions 4.Set up 5.Turn in Procedures TEACHER (TALK WHEN CALLED ON)

Due Date Reminders! Results due 5/28 Conclusion due 5/30 Last day for late work 6/2 TEACHER (TALK WHEN CALLED ON)

Extra Credit! points for typed work on results and conclusion! 2.1 point for presenting tomorrow. (sign up at the end of class) 3.2 points for writing background information for the lettuce seed (Lactuca sativa). Come in after school for information. TEACHER (TALK WHEN CALLED ON)

Measuring Radicle Length If your seed sprouted, then there should be a radicle. The easiest way to identify it is to look for the “fuzzy” part of the root. TEACHER (TALK WHEN CALLED ON)

Radicle Length TEACHER (TALK WHEN CALLED ON)

Measuring Radicle Length 1.Place one end of the radicle against the “0 mm” point on your ruler. 2.Using the tweezers gently stretch the root along the ruler. TEACHER (TALK WHEN CALLED ON)

Radicle Length TEACHER (TALK WHEN CALLED ON)

Measuring Radicle Length 1.The part above the fuzzy area does not count in your measurement. 2.You will be measuring growth in millimeters. 3.If your seed did not germinate, it counts as a 0mm. 4.Remember to record and average your data! TEACHER (TALK WHEN CALLED ON)

Getting your materials 1.A – Get data sheets for your group 2.B – Go and get your “plates” 3.C – Get your Kit from the back 4.D – Organize your materials. TEACHER (TALK WHEN CALLED ON)

Measuring Radicle Length 1.The part above the fuzzy area does not count in your measurement. 2.If your seed did not germinate, it counts as a 0mm. TEACHER (TALK WHEN CALLED ON)

Clean up A.Throw away your bag and dishes. B.Clean up your kit and put it in the back. C.Bring your data table up to me for a moment. D.Collect conclusion sheets for your group. TEACHER (TALK WHEN CALLED ON)

Results 1.Average your results. 2.Decide on a graph type. 3.Begin graphing. 4.When you are done, discuss as a group what could have caused your results. TEACHER (TALK WHEN CALLED ON)

Results 1.Your data table 2.A graph 3.A statement about if your hypothesis was correct or incorrect. THIS IS DUE TOMORROW! TEACHER (TALK WHEN CALLED ON)

Conclusion Done as you’ve always done it (mostly): 1.Your data copied into the table at the top. 2.The hypothesis is (correct/incorrect). 3.The high average data point is (X mm) for (the manipulated variable). 4.The low average data point is (Y mm) for (the manipulated variable). 5.The difference between the high average data point and the low average data point is (X mm – Y mm). 6.A conclusion statement stating why you think you got this result. TEACHER (TALK WHEN CALLED ON)

Presentation You will be presenting the following: 1.A group member’s graph 2.A group member’s conclusion 3.What can be researched further based on your data. 4.What you could change if you did this type of bioassy again. 5.What the results mean in the real world. 6.Why it could be important for people to know. Must be more than one minute and less than five minutes! 1 point extra credit for presenting tomorrow TEACHER (TALK WHEN CALLED ON)

Work time Work on: 1.Your data table. (due 5/28) 2.Your graph. (due 5/28) 3.Your conclusion. (due 5/30) 4.Your group presentation. (5/28, 5/29, 5/30) TEACHER (TALK WHEN CALLED ON)

Moment of Zen Toxicology, in one form or another, has been around thousands of years. TEACHER (TALK WHEN CALLED ON)

Ancient Timeline of Toxicology 2695 BCE: Shen Nung (China) conducts extensive research into herbs took place in BCE: The Ebers Papryus (Egypt), a medical text, was written. It contained information of various toxins. 25 BC: Aulus Cornelius Celsus (Roman) wrote the Celsus De Medicina, a catalog of medical knowledge, including toxins. TEACHER (TALK WHEN CALLED ON)

Exit slip Was your hypothesis correct or incorrect? Why do you think this happened? RESULTS ARE DUE TOMORROW! TEACHER (TALK WHEN CALLED ON)

LAST PERSON CALLED: (ONLY) CALL ON A FRIEND FOR HELP!