My quick co-op lesson was an off-shoot from the Montessori God With No Hands great lesson. In that lesson, we begin with God who created everything. And, God gave everything in the universe rules to follow. Heat would make particles rise, and cold would make particles fall. Some particles wanted to stick close together with other particles, and other particles didn't feel like mixing--ever. Our co-op group discussed briefly that particles that stick closer together tend to sink and go underneath particles that like to stay further a part.
Then we got down to the oil-y reality of things and brought out the oil, water and food coloring. We made our oil and water layers and discussed how the water particles want to stick closer together and that is why they sink to the bottom and the oil particles like to be further apart and they rise to the top. We also discussed that the oil and water particles really just don't like to mix--at all--ever. Then we got to seeing all this in action.
- tall cylindrical see-through container
- food coloring
- Antacid tablets
Put everything together as follows...
Drink any extra water if the container is too full.
Add 10 drops of food color to water.
The gas bubbles will make droplets of water rise upward in the oil and because the water is more dense than the oil, the water droplets eventually sink once again when the gas is released.
Now, I have to figure out how to dispose of this activity. Any ideas?