Brine Shrimp Class Data

2%                                        3%
7.2                                         12.5
7.8                                         27.8
3.8                                         19.8
30.5                                       17.9

22                                          12
21                                           42.5
18                                           18
24                                           31

13                                          9.7
32                                          20
12                                          24
                                              8,2
                                              54

Brine Shrimp Lab: Due Friday 9/9 through turnitin.com

Please Use the Following Guidelines to Write Up Your Brine Shrimp Lab.

• Question:  Is there a significant difference in hatching rate between brine shrimp hatched with 2% salt water and 3% salt water?

• Using the class data, do a t-test between 2% and 3% salt water.  Use the equation and show your work!
• Determine the number of degrees of freedom and look up the critical value.  
• Compare the t-value to the critical value and interpret the meaning.
• Discuss the quality of the data.  Is it consistent?  Is there enough of it?  
• Discuss at least 3 sources of uncertainty in the lab, being as specific as possible.  Include in your discussion whether you think these are major sources of uncertainty or fairly minor.
• Suggest at least 3 specific ways to improve the quality of the data.  In this case, each source of uncertainty should have a suggestion for improvement.

Submit through turnitin.com by Friday 9/9 at 3:20 pm.

Class ID: 13420275

Password: brineshrimp

First Week of School!

• Mon 8/29:  Take roll, demonstrate early work, overview of Class Expectations (see Class Expectations in the Document section and read it), get textbooks, start Brine Shrimp Lab.
• Wed 8/31:  Hand out Safety and Academic Honesty Contracts.  Please sign them and get a parent or guardian to sign them by next Wednesday 9/7.  Calculate number of brine shrimp on the grid, showing your work.  Count number of live shrimp for 3-4 different samples.  Calculate number of hatched shrimp and calculate percent hatched.  Share this number with the class.  Use a TI-84 calculator to do the TI-84 activity on the back of the Brine Shrimp lab handout.  Start working on the Significant Figures and Uncertainty worksheet.
• Fri 9/2: Notes on counting and calculating with significant figures.  Calculating mean and uncertainty.  Do all of the worksheet except 21-25 for now.  We will go over those later.   Meaning of t-test.  Do a t-test on the class data to determine if there was a significant different in hatching percentage between shrimp placed in 2% versus 3% solution.  Brine Shrimp write-up (directions to come later) submitted by next Friday 9/9 through turnitin.com

Welcome to IB Biology Higher Level 2016-2017!!!

Welcome back to the 2016-2017 School Year!  This will be the website for your IB Biology class for the next 2 years.  If you look through old entries you can see what classes before you have done.  This will be a good place to go to get class assignments, class resources, and just to keep yourself informed about the class.  When you miss class, come here first to see what we did in class and to find out if there is anything you can do from home.  After that, if you still have questions, you can e-mail me:  mkenny@pps.net

I look forward to meeting you and spending the next 2 years learning biology!  We will cover the following topics during the first year:

First Semester

Introduction to Course, Statistics, and Measuring

Cells and Membranes

Biochemistry:  Macromolecules

Cell Respiration and Photosynthesis

Cell Division:  Mitosis and Meiosis

Genetics

Second Semester

Replication, Transcription, Translation

Enzymes

Biotechnology

Plants

Ecology (maybe get it started)

Kahoot Information

So apparently you CAN access my Kahoot quizzes.  All you have to do is sign up for Kahoot and then search under my username, which is mokenny.  My quizzes are all public, so you should be able to access them.  Let me know how it works.  Do you see all the questions and answers?  Can you play it as a quiz?  Thanks to students in 8th period for helping to figure this out!!

Preparing for Paper 3 (test on Fri 4/15)

• First part has some random questions about labs and a data-based question
• Second part is good coverage of the 6 sections of Chapter A, mostly short questions (1-3 pts), but one longer question
• One of the animals studied today is on there
• You have to describe functioning of either the human eye or the human ear
• Get here on time on Friday!  You may want to have all your time.  If you are stuck, move on!!!

Eye Dissection Make-Up

Watch video on Cow Eye Dissection and describe structure and function for the following:

1) Cornea
2)  Lens
3)  Iris
4)  Retina
5)  Sclera
6)  Choroid
7)  Optic Nerve
8)  Vitreous Humor