Compare and Contrast Venn Diagram Tray / Sensory Plate / Montessori trayWhether youre just practicing the art of identifying similarities and differences, or youre looking at more complex tasks like learning Boolean logic in algebra, this Venn Diagram Tray allows you to physically work out your childs thought process. A Venn Diagram tray helps kids learn how to classify objects by category. They consist of two or more circles that overlap in the middle. A rule or theme is set for each circle that will overlap in the