Small Organisms set of prepared slides is perfect for young children and students interested in learning about the building blocks of science and nature through the lens of a microscope (sold separately) Each slide is clearly labeled for easier identification of the specimen it contains Specimens are sealed behind a cover slip made from high-quality optical glass Included slotted slide case makes it easy to safely store and organize the slides Set of 15 slides includes the following specimens: Bird Feather, Bee Leg (w.m.), Butterfly Mouth Parts (w.m.), House Fly Wing (w.m.), Aphis (w.m.), Honey Bee Mouth Parts (w.m.), Planaria (w.m.), Hydra (w.m.), Daphnia (w.m.), Trichuris Trichiura (w.m.), Single Cell Zoo (w.m.), Mosquito Larva (w.m.), Fish Scale, Insect Compound Eye (sec.), and Paramecium Division (w.m.)