Four puppets, plus Shelly the Nanny make for a treehouse full of fun for pre-schoolers or older math students. Enjoy the antics of Dicky Duck as he learns the basics of subtraction. Learn along with Slopasaurus Rex, Henny Higginlooper, or Arnold Schwartzenbull as Shelly the Nanny teaches subtraction skills at the intermediate or advanced learning level. Your child will easily climb to the top of the class after watching The Learning Treehouse: Subtraction. It makes learning fun! Approx. 51 minutes.