Probably Pistachio (MathStart 2)
Pigs in the Pantry: Fun with Math and Cooking (Pigs Will Be Pigs)
Pigs Will Be Pigs: Fun with Math and Money (Fun with Math & Money)
Pigs on a Blanket (Pigs Will Be Pigs)
A Very Improbable Story
It's Probably Penny
Pigs Go to Market: Fun with Math and Shopping (Pigs Will Be Pigs)
Pigs on the Ball : Fun With Math and Sports
When a Line Bends . . . A Shape Begins
Is a Blue Whale the Biggest Thing There Is? (Wells of Knowledge Science Series)