This document provides information about classifying different types of sponges and cakes. It discusses three main classifications: shortened cakes like pound cake and butter cake, which contain high fat; unshortened cakes like sponge and angel food cake, which contain no fat; and modified sponge cakes like chiffon cake, which are a combination. Characteristics of each classification are described. The document includes activities for students to identify cake classifications and reflects on a quote about cakes being like books.