Adjustable teacher's pointer is used in teaching

The utility model relates to a teacher's pointer especially relates to an adjustable teacher's pointer is used in teaching. The to -be -solved technical problem of the utility model is to provide an adjustable teacher's pointer is used in teaching of can adjust length. In order to solve the technical problem, the utility model provides such adjustable teacher's pointer is used in teaching which comprises there are rubber ball, telescopic link, hollow tube, first slide rail, first slider, fixed block, first elastic component, second slide rail and the second slider, rubber ball rigid coupling cooperates with the hollow tube suit in telescopic link top, telescopic link, first slide rail rigid coupling in hollow tube inner wall one side, and the telescopic link passes through first slider andfirst slide rail slide type connecting, and the hollow tube is kept away from one side of first slide rail and has been seted up a plurality of through -holes. The utility model discloses the effectof freely adjusting teache