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