Miss Murkly is all in a tizzy. She claims she will never bake again! A customer, Mrs. Half Monster, wants to return one of Miss Murkly’s famous Heavenly Half Muffins. This has never happened before; the muffin was perfect, half slime and half grime! But Mrs. Half Monster claims her order is 'Wrong! All wrong!' By learning all about HALF, the Monster Math Squad unravels the mystery of why Mrs. Half Monster doesn't like Miss Murkly's famous Heavenly Half Muffin! Word of the Day: HALF. Math Concept: Exploring the concept of half using a layer cake.