How much multi -functional teaching aids

The utility model relates to a how much multi -functional teaching aids. Its main technical characteristics utilizes spare parts such as I -shaped groove, slider, protractor, water polo bubble, clamp cover, chalk clip cover, clamp cover base, laser instrument to realize the function of how much multiple teaching aids such as ruler, set -square, protractor. The utility model discloses that uses the educational aid is practical in brief the starting point, will multiple how much teaching aid collection commonly used as an organic whole, simple structure, and the function is perfect, and is energy -concerving and environment -protective, and the operation is simple and easy, and convenient to carry has very strong popularization and application and is worth, is a convenient and practical's how much multi -functional teaching aids.