1. What did we learn from our onion root tip investigation?

2.  Get your lab folder.  Look at the reflection you made for HW.  Identify 3 areas for improvement and target one as your goal for this lab! Starting Activity:

3.  Switch your introductions with a partner:  Did they identify knowledge of the cell cycle and mitosis? Circle key vocab they used. If you think they are missing terms write them on their page.  Did they show knowledge of what an onion root tip is and why the two areas (cortex and meristem) might differ?  Did they link the information about mitosis and onion root tips to the purpose of the lab (I will ask to share excellent examples here!) Introduction Peer Edit

4.  From yesterday:  Where did you see more cells? The cortex or the meristem? Why is this information important? Where might you discuss this information in your lab?  Why did one group count 40 cells in the cortex and another group counted 156? Is this a mistake? If not, what might it suggest about the root tips? Would you change anything about the experiment? Where might you discuss this in your lab? Data Analysis

5.  Find a partner who was not in your lab group.  Use the Excel spreadsheet to sum each column for the cortex and meristem.  Using the directions on your lab sheet, make a pie chart for each.  Organize the pie charts in a document and write a trend that analyzes what the two pie charts show. Today:

6.  Construct a table to show your individual data and the class totals. What trend does your table analyze?  You will also need pie charts for your individual data. What trend do your individual pie charts show? Is it the same trend as the class data?  Use your data and numbers to explain the conclusion you are to draw about the cortex and meristem.  What theme applies to this lab? On your own:

7.  Tuesday March 11  Tonight: Make your individual pie charts and use your data to write part 1 & 2 (response to hypothesis and error) of your conclusion! Lab Report Due: