Googly Eyes, our Newest Tank Addition

This is Googly Eyes, our orangespot prawn goby. He's something, ain't he? He's pretty little and he always stays on the bottom. Raoul, our fish guy, gave us a deal on him. He's supposed to filter the sand in the tank and get food that way, but I have yet to see him doing that. I guess I should call to make sure that's normal. So, anyway, here is just one more glimpse into our life and our newest pet, Googly Eyes the Goby.

A little Fire Fun!

In school even! Elizabeth was near tears when she realized I was going to teach them about fire. Funny since she's always begging for a fire in the fireplace so she can roast marshmallows. She calmed down when I used two of her favorite things to demonstrate the lesson: birthday candles and clay.
The book we were studying was explaining that fire must have three things to exist. Does anyone know what they are? I only knew two of the three. They are 1. Heat 2. Air 3. Fuel
So we did an experiment with 3 birthday candles, each of them stuck fast into a ball of clay. I lit them, one at a time, and the kids got to extinguish them by removing the heat, air or fuel.
I let Elizabeth squirt the first with water, to extinguish the Heat. Andrew then got to cover the second candle with a glass jar to suffocate it. The third? We just let it burn until the entire candle was gone! It only took about 10 minutes.
Andrew loved it. I've scheduled a field trip to the Fire Station across from our neighborhood for Monday. I'm looking forward to it. And I drew a very bad picture of our home to demonstrate and discuss fire escape options. In the process, I realized that we only have 2 smoke detectors in the whole house (master bedroom, and hall). Does anybody know how difficult/expensive it is to get some more of those?