Preschool Express has a great boat unit: Boats Afloat
Sink or Float File Folder Game
Sink or Float experiement guide
1/2 of a Deviled Egg
1/2 of a peach
Row, Row, Row Your Boat
The Banana Boat Song (Day-O)
The Boat Race Relay
Fold an origami boat. This reminds of of the fun Curious George book about turning all of the delivery boy's newspapers into little boats.
Valerie shared a styrafoam boat craft she posted on Preschool Post.
Learn to draw sailboats, submaries, pirate ships, speedboats, and Navy ships.
Make an Incredible Ice Boat or Foam Boat.
Use rectangular shapes for the boat, then tape or glue a paper triangle onto a popsicle stick and insert this into the "boat." Let the children paint and/or glitter-glue all over to make their boats extra-special. Consider having boat races once the boats are ready and dry.
The Boat Book by Gail Gibbons
Toy Boat by Randall de Seve and Loren Long
My First Book of Boating Words by Erica Watson
Read and learn about the Coast Guard
Show photos of different boats. What are the differences between yachts and sailboats? Between tugboats and barges? Submarines and aircraft carriers?