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Didax Biodegradability Kit for grades 5 - 9 contains 6 each of clip frames for flat items and open cage frames for small items. Kit also includes closed cage frames to separate small items from testing medium and test strips in copper, aluminum, tin, cardboard, hot and cold water-soluble plastic. It allows students to experience biodegradability and has 6 clear, hexagonal, covered containers that let easy visibility of material's biodegradation in various media.