This game is inspired by the urban nature you might find at a park, city green space, or your own backyard! The game includes 24 cards (12 pairs). Each card features an original illustration painted by Stephanie Hathaway and printed on premium card stock that has a soft touch finish and rounded corners. They measure 2.5" x 2.5". Cards Included: pine cone firefly mushroom robin fern earthworm rabbit sunflower fox feather monarch butterfly nest Matching is an important early childhood math skill that helps in classification of objects. To play, simply face them down in a grid and take turns flipping over the cards two at a time while trying to match the image on the card. Collect the most pairs to win! In an effort to be ecofriendly, I have confirmed that the cards in this game are biodegradable and recyclable. We are working toward having 100% biodegradable and/or recyclable packaging and shipping materials as well.