These cards are great for developing comprehension/expression and conversation skills. As a speech therapist, I use them to build vocabulary, lengthen sentences, improve listening comprehension, improve topic maintenance and occasionally for articulation. There are multiple cards for different categories (e.g. Food, School Supplies/Activities, Emotions, Concepts, Activities, Forest/Jungle/Sea/Farm Animals, etc.). There are also many questions (Yes/No, W and payout questions) on the back of each card. These cards can be used for various activities.