Teacher's Venn Diagrams are a reversible, classroom-sized dry-wipe board with Venn diagram template on one side and a Carroll diagram template on the other. Perfect for providing instruction in classifying objects, numbers and shapes, and sharing solutions and analysis. Can be used alone, but is the perfect companion for the child A5 version which allows for individual child study, with the teacher board being employed when the child exercises are complete. Size: 520mm x 385mm. Made from durable plastic.