1. VIDEO - Standard error explained
2. Review SD/SE buffet page with lab group - discuss differences, make corrections
3. LAB: same as #2 but with lab graph comparing mean and SE of the two populations
            also:  write a CER comparing the two populations via means & SEM
    Are you keeping up? Lab notebook should include: background info; question or objective; population histogram; results table; representative calculations/formulas; CER re:variation; graph of 2 population means with SEM; second CER re: populations compared. 

    LEAVE LAB NOTEBOOK for GRADING - make sure your name is clear

HW: • Buffet: Malthus essay - mark up, paraphrase, analysis q
        • Bring a 'beak' - some sort of tool to pick up beans/seeds with

1. Variation study results
     Quality data? No sloppy science!
     Does your data support the claim? Graphs shared
2. PPT/handout: Describing a population via the standard deviation; Qualifying the sample mean via standard error. 
3. Lab: compare your population with another: same, or different? Graph means with SE bars to determine; solve for mean +/- 1SE for both populations 
4. 15.1 & 15.2 notes stamped

HW: • Lab: CER analysis re: variation as a paragraph in lab notebook
         • Lab finish #3 from above in lab notebook. Graph by hand or in Sheets - see the lab ppt (Selection) for how to set up table, graph the means, and add error bars. 
         • Buffet: Statistics in Biology page 

assembly schedule

1. Finish PPT: Defining Life
​    15.1 & 15.2 notes stamped
2. Lab: generate quality data to support the claim that organisms are varied
    record lab objective or question
    what measurement tool do you need, (if any)? 
    no sloppy science! 
​3. Lab results: Histograms & descriptive statistics. 
    print 4/page - ask for help before wasting lots of paper and ink! 
   add to lab notebook 

HW: • Make sure your lab work is complete thus far: background, lab objective or question, labeled histogram, results table with values for n, min, max, range, mean, median, mode.
• In Sheets, find the standard deviation of the data set by typing in the formula  =STDEV, highlighting the column of data, and hitting 'return'. Use SD, n values to find standard error (SE) using the formula on the AP Formula sheet picked up in class today. (Consider inputting  formula to Sheets.) Add both SD/SE to your results table. 
• Note (highlight) any of these results set metrics that are on the AP Formula sheet. 

1. Pick up first 'Buffet'
   Last chance for Chapter 1 work stamped
     review methods questions together/edit your answers
2. Lab: Selection, Part A, Variation
    also remove plastic from plants, and gently  water

HW: • Finish 15.1 & 15.2 notes/questions
​   • Watch this HHMI video on  Rock Pocket mouse selection

1.  Frog data and claims shared; MC practice question
2. Selection Lab prep: Artificial Selection of Wisconsin Fast Plants
3. HW stamped, reviewed:
​    Ch 1.1 notes; scientific methods reviewed via illustrative examples 
4.  Start Selection lab
5. Buffet: Unit 1,  Mechanisms of Evolution

HW: Start text notes/questions 15.1 & 15.2 (Q: Reviewing this chapter: # 4, 7-12, Think scientifically #1)   Printable copy here, and available in the classroom Tuesday morning.. 

Please join me on the G quad to check out the solar eclipse Monday during break! We have cool glasses you can wear to safely look at the sun. 

Eclipse trivia
• Locally: ~9am - 11:30 am; about 75% coverage of the Sun at the peak
• Solar eclipses are when the orbit of the Moon takes it directly between the Earth and Sun.
• Although the moon is much smaller than the Sun, it is much closer to Earth, so its shadow covers the Sun. 
• Total solar eclipses happen every year, but we miss most of them (all that ocean!)
• This is the first solar eclipse over the continental United States since 1979 (and the first to run across the entire country since 1918).
• So what? scientists will use the very short window of time of total coverage  to study the solar corona and the atmosphere
• What would be the arrangement of Earth, Moon, Sun in a lunar eclipse? 

More on eclipses, including some citizen science opportunities at the NYT

Come by Friday for a reprint if you didn't get a book. 
If you decide to drop the class, please return your book immediately. 

1. Why AP Biology?
2. Course Overview : College Board, syllabus, scores
3. Get Book: 1:15; 3:00
4. Working with Data: Amphibian declines and pesticides

HW:  • Complete the Working with Data through #4   (extension: Read more about Hayes in the New Yorker)
• From today's syllabus: take the notes on Defining Life (& Science Methods if you need to review )  use Cornell format, or create an outline 
• Also from the syllabus, answer the Scientific methods Review q 
• Review using spreadsheets for tables/graphs/formulas via this PPT
​• get a sturdy lab notebook and other class supplies