Biology teaching device

The utility model discloses a biology teaching device, vertical joint has cross thermal insulating plate in the inner chamber of box body, and the inner chamber of box body is separated for first cavity, second cavity, third cavity and fourth cavity, the upper surface upper left corner department of upper cover closely laminates and has the semiconductor refrigeration piece, the upper surface upper right corner department of upper cover closely laminates and has first heater strip, the upper surface lower right corner department of upper cover closely laminates and has the second heater strip, the upper surface of upper cover closely laminating has the battery, and the battery passes through the wire and be connected with first resistance, first heater strip, second resistance, second heater strip and semiconductor refrigeration piece electricity in proper order, the utility model discloses the change and last phenomenon of student's material in can the audio -visual biological assay of seeing can be made, th