Uncle Norm is heading to Hawaii for a secret meeting. He’ll be there four days and four nights. How can he possibly fit all the clothes he needs into one suitcase? Luckily for Uncle Norm, a style-savvy fashion consultant teaches him all about combinations: how he can use a few pairs of tops with a few different bottoms to have enough outfits to last his entire trip.

The Gist: This episode is about discovering all of the possible combinations (or arrangements) for a set of objects, using drawings, tree diagrams and cross-diagrams.