Objective: Participants will be able to understand the concepts of diffusion and osmosis, identify how they work in different contexts, and explain how they are relevant to everyday life.

Required Materials: -Whiteboard -Markers -Copy of Handout: Diffusion and Osmosis (attached) -Two beakers or other containers for demonstration -Table salt -Two clear membranes (coffee filters or cellophane paper) -Food coloring -Ruler

Steps to Facilitate:

1. Welcome the participants and explain the purpose of the session.

2. Ask the participants to brainstorm and share what they know about diffusion and osmosis. Write their responses on the whiteboard.

3. Explain more broadly the concepts of diffusion and osmosis and the differences between them.

4. Distribute the handout, Diffusion and Osmosis, and ask the participants to read it and complete the questions on the sheet.

5. Present a demonstration of diffusion and osmosis. To start, measure out two beakers or other containers filled with water. Put a few drops of food coloring into the first beaker and stir it thoroughly. Take a clear membrane (coffee filter or cellophane paper) and place it over the second beaker, ensuring that it is secure. Notice how the food coloring slowly permeates through the membrane and into the other container.

6. Now pour a teaspoon of salt into the first beaker and observe what happens. Ask the participants to make predictions about what will happen and to explain why they think it will happen.

7. Observe and discuss the effects of osmosis as the salt is drawn in and out of the membrane. Use the handout as a reference and allow plenty of time for questions.

8. Conclude the session and emphasize the relevance of diffusion and osmosis in everyday life.

9. Thank the participants for their participation.

Handout: Diffusion and Osmosis

Diffusion is the process by which particles spread out evenly in a liquid or gas. The particles move randomly and independently until they are distributed around the entire area. Osmosis is a type of diffusion that involves the movement of water molecules through a semi-permeable membrane. The process of osmosis is affected by the concentration of molecules on either side of the membrane.

Questions: 1. What is the difference between diffusion and osmosis? 2. What are some examples of diffusion and osmosis in everyday life? 3. When does osmosis occur? 4. What is a semi-permeable membrane? 5. What factors affect the rate of osmosis?