Tuesday

1.  PPT: Diffusion
2. HW recap: Lab B background, block example
3. Pre-Lab

HW: • Read/take notes 4.1- 4.3
​• Video: Khan Academy's Cell Size  (linked in resources)
   (Caveat: focus on the what and why, rather than the how, b/c he finds V : SA, not SA : V)   
• Final edits to lab paper
• Practice using SA, V formulas, writing and reducing ratios via slides 2-3 here, with solutions on 4. 
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