This year, I decided to have a focus on dry ice. Normally dry ice isn't seen at a primary school, but after attending a session at Victoria University, and going over lesson ideas with the experts at BOC, I decided it would be worth having a go, and it would be lots of fun!
We talked lots about what dry ice is, how its made, how it freezes your warts! and where it comes from.
Because of the safety issue and the wide range of ages, I decided to lead the activities and rope in as many helpers as I could. Dangers and safety ideas explained, we were ready to explore dry ice. Each boy also got to wear a nifty little pair of $1 gloves - not amazing protection at all, but something to remind them about their hands and not touching the dry ice. It certainly worked, not one boy picked up the ice. Well done guys!
We made small bubbles filled with gas, we made big bubbles filled with gas, we made spoons sing, we froze leaves so they cracked and crumbled like chippies, we made our own little fire extinguisher which put out a candle and we experimented with water of different temperatures. We had fun!
Where did the ideas come from?
Steve Spangler always has lots of fun with science and his website has lots of ideas and links to fun YouTube clips. How to make a big bubble and other cool experiments!