This printable or digital resource is a Card Sort Game used to reinforce and review the distinguishing characteristics of the most common invertebrate animal phyla: Porifera, Cnidaria, Platyhelminthes, Nematoda, Rotifera, Mollusca, Annelida, Arthropoda, and Echinodermata. Students will match descriptions / functions / pictures to the correct phylum. This resource is editable and is easily differentiated for students of different grade levels and ability levels. Purpose: To reinforce and revie