California Career and Technical Education Standards

• ANR.C.C13.1 Understand the steps of the scientific method.
• ANR.C.C13.3 Use the scientific method to conduct agricultural experiments.
• ANR.C.C5.3 Understand various cell actions, such as osmosis and cell division.
• ANR.FS.11.0 Demonstration and Application
• ANR.FS.5.3 Use critical thinking skills to make informed decisions and solve problems.
• ANR.FS.9.3 Understand how to organize and structure work individually and in teams for effe...

California Academic Content Standards (Reinforced)

• ELA.9-10.R.CAGT.2.5 Extend ideas presented in primary or secondary sources through original analysis...3
• ELA.9-10.R.CAGT.2.6 Demonstrate use of sophisticated learning tools by following technical direction...2
• S.9-12.LS.1.a Students know cells are enclosed within semipermeable membranes that regulate th...1

• Diffusion in a Baggie - Hooks / Set

  When the students first come in, I have a question on the board as their warm up. How many of you use ziploc or plastic baggies on a regular basis? (Allow for student response time) What type of items do you and your family store in the ziploc bags? (Allow for student response) Show examples of baggies that you have stored items in. (Content inside of the baggie doesn't matter, it just helps to demonstrate the use of the baggie) Today, we will investigate just how good our baggies are and if there are some things that shouldn't be stored in plastic baggies. (At this time, I hand the students the "Diffusion in a Baggie" Lab and begin the set up for our mini-lab. I call it a mini-lab, because the results can be seen within the class period.) The students will watch their bags as the lecture and lab set up for the egg osmosis lab continue.

  • Diffusion in a Baggie [ Download ] This is a student handout for the lab.
• Egg Osmosis Lab - Lab / Shop

  This is the lab that I actually have them set up on a Thursday or Friday and finish the following Thursday or Friday. The lab is a student handout that I give to my students. I break them into groups (their tables) and have them work together to set up and perform the lab. I have everything all set out and I show them how to properly measure the liquids in mL. With my classes, anyone or group who breaks an egg has to bake cookies or a treat for the entire class. This usually works very well, because breaking an egg will also put students behind if they break their egg later on. I have had eggs rupture in the cups before, so you can expect that there will be egg casualties along the way.

  • Observing Osmosis Lab [ Download ] The lab handout for students is "Observing Osmosis Lab"
• Osmosis and Diffusion Notes - Lecture

  These are notes that I use to give the students some background on cellular activity within the cell. We talk about the movement of materials, both solids and liquids. I ask the students what gives them energy. (I am leading the students through a series of questions to link the need for food to create energy in their body. Once they have talked about the need for food to give them energy, I then ask them how their cells get energy. This leads to the discussion of how materials move in and out of the cell and how their body gets the energy it needs from the cells in their bodies.)

  • Osmosis Power Point [ Download ] This is the power point for the lesson on osmosis, diffusion and solutions.