For "B" is for Boat week, we did a little sink or float experiment. First, I had the girls make their own boats out of tinfoil (I helped my 2-year-old a bit).
Then they loaded the boats up with objects to see if they would capsize.
All of our boats held up outstandingly well. :)
Next, we dropped items in one at a time to see what floated and what sank. We made lots of guesses, like, "Oh sure, the metal spoon will float!"
Afterwards the girls got to just play and soak the kitchen floor. Good clean fun!