curriculum. It's taking especially long because I keep interspersing it with Battle with the Bugs: An Imaginative Journey Through the Immune System. Human Body Detectives has several units actually, and I have mixed them all in at various points where they correspond with Noeo Biology II.
Today's lesson called for petri dishes. Woops! I only just read the lesson the night before and I don't normally have petri dishes on hand. So I started searching for a way to make my own.
I found a great site for homemade petri plates
and I set out to make some! It was actually quite easy and turned out really well. So glad that I never threw away that box of unflavored gelatin that's been in the cupboard over the fridge for soooooo long.
Here's what you need to get started
- normal paper muffin liners (I layered 3 of them)
- foil wrap pressed into the bottom of the muffin tin
- short, stiff, wax lined muffin holders. I can't even remember where or why I got those. But they definitely worked the best!
The recipe made a full 4 cups, and I ended up with plenty left over. If I'd had more muffin tins and liners I would have made another batch. Oh,I also used the container that held the muffin papers since it came with it's own lid. It also worked well.
I put each one inside of a plastic baggie and labeled it "________'s dirty hands" or "_______'s clean hands". So there were two for each child. I put them on a cookie tray and stored them till morning in the fridge. I noticed that the thin paper muffin liners were sweeating at the bottom, so I put a folded napkin to absorb moisture under those.
We'll keep you posted!