Weeks 5+6

• Mon 9/24:  10 minutes to assemble Cell Model Projects.  Evaluate cell models.  Do your own and 3 others and turn in the evaluation sheet.  Continue with the Microscope Lab.  View cork, pond water, elodea, and human cheek cells.  Make labeled drawings for the elodea and cheek cell.  Read 1.3 if not already.
• Wed 9/26:  Critters are in!  Go over how to calculate magnification.  Then view and draw:  Volvox, Hydra, Amoeba, Paramecium, and Scenedesmus.  Make sure that you view the first 2 and hopefully 3 today because they are the most likely to perish before Friday!
• Fri 9/28:  Finish viewing and drawing critters.  Also, look at bacteria through the prepared slide set up in the room, view and draw onion, and catch up on what you missed.  Make sure that you have shown a calculation of magnification for each drawing and that you answer the lab questions completely.  Staple drawings to the hand-out and turn in either today or Tuesday 10/2.
• Tues 10/2:  Turn in Microscope Lab if not already.  Basics of plasma membranes and do the Bubble Lab in class! Do the Data-Based Question (DBQ) on pp. 28-30 in your notebook.   Read 1.4.
• Thurs 10/4:  A few notes on membranes, including endocytosis, exocytosis, and vesicle movement.  Do Paramecium Digestion Lab.  Get DBQ from 28-30 checked off and go over it.

The 3rd and 4th Weeks of School:

• Mon 9/10:  Go over how to make a histogram and how to show work for standard deviation and t-test.  Work time to finish Statistics Packet and turn it in.  And also, to work on the Brine Shrimp Lab, due Wednesday by 3:30 pm through turnitin.com
• Wed 9/12:  Questions on Brine Shrimp Lab?  Review for Statistics quiz/test to be taken on Friday 9/14.  Start talking about Cells.  Read 1.1 in text book (I have it scanned in the documents section).  Turn Brine Shrimp Lab in through turnitin.com by 3:30 pm today.
• Fri 9/14:  Take Statistics Quiz/Test and resume working on Cell Worksheet.  When everyone is finished with the quiz, we will do some preliminary cell activities.  Hand out Cell Model Project due Monday 9/24.
• Tues 9/18:  Overview of cells.  Cell Worksheet due at the end of the period.  Brainstorm Cell Model Project.  Read 1.2.
• Thurs 9/20:  Introduce Microscopes.  Start Microscope Lab by looking at cork, pond water, elodea, and onion (if time for all).  Work on Cell Model Project, due on Monday!

What's on that quiz/test on Friday, September 14?

Be able to:

• Count sig. figs. and compute and round appropriately
• List the requirements for a good IB graph and give a sketch of what one might look like
• Use TI-84 to calculate standard deviation, t-test, mean, and n (number of stats) without instructions!!!
• Figure out degrees of freedom, find critical value (using chart), and interpret meaning
• State meaning of standard deviation and ranges for 1 and 2 standard deviations (68% and 95%)
• Calculate uncertainty (high-low)/2
• Propagate uncertainty for adding/subtracting and multiplying/dividing
• Calculate number of organisms in a grid using values from several quadrats

Brine Shrimp Write-Up Due Wed 9/12/2018 through turnitin.com

Your Lab Should Include the following:

• Background Information:  1-2 paragraphs of background on brine shrimp, citing any resources you used.
• Question:  Is there a significant difference in hatching rate between brine shrimp hatched with 3% salt water and 5% salt water?

• Using the class data, do a t-test between 3% and 5% salt water.  Use the equation and show your work! (class data below)
• Determine the number of degrees of freedom and look up the critical value.  (see t-test document on this blog)
• Compare the t-value to the critical value and interpret the meaning, being specific!
• 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 your lab by Wednesday 9/12/2018, 3:30 pm through turnitin.com.

Turnitin.com Enrollment Information: Class ID: 19010302 Password: microscope

Brine Shrimp Data (will be here!)
Brine Shrimp Hatching Rate in Percentage (must be alive too!) for 2 different salinites

3% Salinity 5% Salinity

14 4.0

0.1 .6

10. .6

3.0 .1

5.5 7.0

2.5 .6

16 13

1.0 .3
7.0 1.0

1.0 .3

.24 16
.5 .8

First 2 Weeks of School!

Generally, I try to update this before we do it, but today I am recording what we did last week and what we will do this week.

• Mon 8/27:  Short classes.  Introduction to the class, what we will cover, etc.
• Tues 8/28:  Review classroom procedures, including Hall Pass, Phones, Food, Safety, etc.  Hand out Safety and Academic Contracts.  Please return them signed by yourself and a parent/guardian by next Thursday 9/6.  Begin first lab.  Count Brine Shrimp cysts, enter data, add salt water, and leave on the window counter.
• Thurs 8/30:  Rules for counting significant figures.  Computing w/ significant figures.  Do problems 1-20 on first side of the uncertainty and sig. figs worksheet and compute the averages and uncertainty on the reverse side.  Count live brine shrimp and record data.  Calculate the number of live shrimp total and calculate the percent hatched and live.
• Tues 9/4:  Questions on uncertainty and significant figures so far?  Instructions on how to propagate uncertainty through calculations and then do problems 21-25.  Characteristics of a good graph.  Instructions on how to use LoggerPro.  Each student should make one graph, either using the first set of data on the back of the hand-out or the 2nd.  I will initial your hand out when you show me your complete graph.  Turn in the completed hand-out if you are done today.  Otherwise turn in on Thursday 9/6.  Check your brine shrimp.  Bring TI-84 calculator or equivalent on Thursday 9/6.
• Thurs 9/6:  Statistics used in IB Biology:  Standard Deviation and t-test. Practice doing these calculations using a TI-84 calculator by following the instructions and completing the first sheet of the statistics packet.  Work your way through the statistics packet calculations.  Use provided graph paper to make your own frequency distribution graph.  Packet is due next Monday 9/10.  Observe brine shrimp behavior.