for What Floats in a Moat? by Lynne Berry and Matthew Cordell
Archie the Goat has a delivery to make. He has several barrels of buttermilk that the queen needs, but in order to get them to her, he needs to cross the moat.
Testing several different theories to find out what will float and what will sink, Archie and his friend Skinny the Hen don’t succeed at first, but they do try, try, try again (and again). And with reason and persistence, they’ll get that buttermilk where it needs to be!