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Understanding Diffusion and Osmosis in Biology

Explore the concepts of diffusion and osmosis through interactive activities. Learn about the movement of molecules and how salt affects water flow. Engage in diagram dissections and discussions. Estimated time: 5 minutes.

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Understanding Diffusion and Osmosis in Biology

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  1. 9-2 Osmosis Review Ms. Blalock, Ms. Hartsell, Mr. Luckman

  2. Do Now What is YOUR definition of diffusion? What kinds of molecules can diffuse? Draw a diagram of diffusion and provide at least THREE examples of molecules that can diffuse. Estimated Time: 5 Minutes

  3. Today’s Goal Aim: How does salt affect the movement of water? Agenda Do NowOsmosis JonesActivity #1—Dissecting DiagramsIt’s Time to Choose! (Student choice of activities)

  4. Turn and Talk https://www.youtube.com/watch?v=nieb6rnkxYI

  5. Turn and Talk Directions: Silently respond to the question below.Be prepared to share your response with a partner. Why is “Osmosis Jones” blue?

  6. Turn and Talk

  7. Big Idea #1 Osmosis is the diffusion of water.

  8. Osmosis Video https://www.youtube.com/watch?v=w3_8FSrqc-I

  9. Big Idea #2 Water “sticks” to salt.

  10. Big Idea #3 Water moves towards high concentrations of salt.Water → Salt

  11. Activity # 1—Dissecting Diagrams

  12. Activity # 1—Dissecting Diagrams

  13. Activity # 1—Dissecting Diagrams https://www.youtube.com/watch?v=nHWUAdkYq4Q

  14. Activity # 1—Dissecting Diagrams Directions: Create FOUR questions that could be asked about the pictures above. Be prepared to share your questions with a partner.Estimated Time: 2 Minutes

  15. Activity # 1—Dissecting Diagrams Directions: Quiz your elbow partner using the questions from Activity #1.Estimated Time: 2 Minutes

  16. It’s Time to Choose! Step 1: Rank your activities from first to last.Step 2: You will find the directions for each activity in a packet located at the back of the classroom.Step 3: You must complete AT LEAST ONE ACTIVITY before the end of class.Step 4: You must work in groups of THREE at the lab stations.

  17. It’s Time to Choose!

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