The Leaf Cards material consists of three sets of cards featuring the same leaf 24 shapes found in the Botany Leaf Cabinet (sold separately), 72 cards in total. Each set of cards shows the leaf shape with either a solid image, a thick outline or a thin outline. The cards are white with images printed in bright green and measure 14 cm x 14 cm. Use the cards to match to each other and/or to the insets in the Botany Leaf Cabinet. A classic piece of Montessori material, and a must for the classroom or home schooler. Cards can be stored in the Card Cabinet.