This book uses dinosaur trading cards at a trading fair to discuss equivalent values. Mike and his brother Andy are trying to acquire a T-Rex card, and have to make several trades and deals in order to get it. The book shows each deal in clearly labeled diagrams (i.e. 4 Stegosaurus cards for 1 Triceratops card). As with his rock shop book on classification, Murphy includes factoids throughout, this time about dinosaurs. Children can act out each trade with colored pieces of paper as the book is read aloud; you could also have your children set up a “mall” and barter with each other for different goods.
Copyright © BookSmart Math