With bright and inviting photographs, these cards will help children build vocabulary and strengthen reading abilities. The traditional Montessori three-part card format will familiarize children with musical instruments. All photos isolate their subject. All cards have rounded corners and are printed on recycled paper. 12 subjects, 36 cards total. From Maitri Learning. Control card with label measures 3½" x 4¼". Please note: 5mm laminate extends just to the edge of each card, not beyond.