Reflection: Connection to Prior Knowledge Starch and Iodine Diffusion (2 Day Investigation) - Section 3: Explore (Day 1)

 

I begin the year with a unit on chemistry and then use chemistry as a thread with which to tie each of the other units together.  In this lesson, students recall the identifiers of chemical changes as they explore diffusion.  

In some previous school years, I have used this lab prior to completing the chemistry unit and it was still effective in helping students understand the process of diffusion.  I have found, though, that completing this lab after the chemistry unit helps provide the students with a deeper understanding of diffusion and helps to further their understanding of chemistry.

  Using chemistry to understand biology
  Connection to Prior Knowledge: Using chemistry to understand biology
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Starch and Iodine Diffusion (2 Day Investigation)

Unit 3: Cells
Lesson 8 of 12

Objective: SWBAT conduct an experiment to determine the manner in which items diffuse through a membrane.

Big Idea: This lesson serves as a hands on way to help students understand semipermeable membranes.

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