Trend Enterprises Pocket Flash Cards, 2 Sided, Animals, 56/Ct, 3-1/4"x5-1/4" Vertebrate animal cards are color-coded by classification: mammals, birds, fish, reptiles and amphibians. Each card includes photo-realistic art, size, location, habitats, characteristics and interesting facts. Pack includes one information/activity card. Ideal for home, school or travel. 56 two-sided cards per set, with quick-sorting rounded corners. Ideal for second grade to sixth grade (ages 6 to 11). Handy 3-1/8" x 5-1/4" size.