Sets of 8 related 35mm images photographed through a microscope called photomicrographs. Arrows and call outs help the student locate important features. The film is mounted in a clear plastic holder that protects it on both sides. Each Microslide is accompanied by a detailed lesson plan designed to stimulate, inform and question students about the topic under study. Each lesson plan has a pocket in which the Microslide is stored. Lesson plans are printed on heavy tag stock and will serve for repeated use. Box of 300microslides (specify set # and title).