For preschool a few weeks back, we had a Luau theme. It was really anything related to Hawaii but the other 'L' themes (from the site I get my theme ideas from) seemed sort of Lame. haha... So Luau it was. We learned about beaches and oceans too. My daughter seemed to really like it.
The part she liked best, however, was SCIENCE! That 'a kid. Naturally, we had to make our own volcano. I'm sure every parent in america remembers doing this when they were kids, even going so far as to build a paper mache cone and awaiting anxiously the "lava" that erupted. Every parent but me, that is. I had never done this before. So it was a true science experiment for both of us.
Rather than go the fancy paper mache route, we just used an old sparkling cider bottle that we had. Luckily I had the foresight to put the experiment in an easy-to-clean mixing bowl.
I put a few table spoons of baking soda in the bottle, along with a few drops of food coloring for effect. I added the vinegar and waited for the explosion, and...nothing. Not at all worried, I grabbed the bottle, put my thumb over the hole and shook it up a little bit. Then I poured in A LOT of vinegar and the lava started to flow! My daughter was so excited!
Okay, I was a little excited too!