Categorizing is an important language skill for all students to develop. Our understanding of vocabulary - which we need for reading comprehension, listening comprehension, and even conversations - is dependent upon our understanding of how words are related to one another. In speech therapy, we spend a lot of time working on these semantic relationships, beginning with basic categories.
Categorical relationships go beyond knowing which group a zebra or table belongs to, however. Items can be categorized by descriptors (soft things, striped things, sweet things) or by personalized features (things I like).
I have an activity (paid) - Cool Language Activities for Speech Therapy that offers this variety of categorical practice as well as tasks for categories, opposites, adjectives, define/describe, sentence starters, rhymes, and initial sounds.
I offer a free trial of it here so that you can use it with your students, too.
Keep cool, on me. And - Keep on talking!
Find me at kidzlearnlanguage