The book has a simple little plot about animals that go for a ride in the row boat. As each animal hops in the boat the question is asked "Do you know who sank the boat?".
Great story to introduce the concept of what makes things sink and what makes things float.
After we read the story I made a simple graph- with the words sink on one side and float on the other.
Ahead of time I gathered several objects to test if they could sink or float. I told my daughter we were going to conduct an experiment and be scientists. We talked about those new words :experiment and scientists. My 3 year old pulled from the bag and I had her predict if she thought it was going to sink or float. (we also talked about the word predict).
She tested it out in the bucket of water and then placed the object in the corresponding column.
When she was done testing them all we compared and contrasted the columns. I asked "Which one has more?", "Which one has less?".
She loved it and after we were done wanted to find more objects to test!