Medium teaching blackboard facilitating chalk dust erasing

Abstract

The invention discloses a medium teaching blackboard facilitating chalk dust erasing. The medium teaching blackboard comprises a wall body, wherein a positioning pin is fixedly connected with the front side of the wall body; a blackboard body is fixedly connected with the surface of the positioning pin by connecting a triangular connecting plate; a fixing strip is fixedly connected with the bottomof the front side of the blackboard body; a sliding chute is formed in the front side of the fixing strip; a slide bar is fixedly connected between two sides of the left side of the inner wall of theslide bar; two sliders are movably connected onto the surface of the slide bar; a notch communicating with the sliding chute is formed in the bottom of the fixing strip; a retractable spring is fixedly connected with the left side of the slider located on the most left side. According to the medium teaching blackboard, a nylon rope winds around a rotating rod by rotating a handle, moreover, two connecting rods are enabled to move rightwards, the sliders move on the slide bar, so that the connecting rods are more stable during moving, meanwhile, chalk dust is convenient to erase, the efficiency is high during erasing of the chalk dust, and teaching quality cannot be affected.

Description

technical field [0001] The invention relates to the technical field of multimedia education, in particular to a blackboard for media teaching which is convenient for dusting. Background technique [0002] Multimedia teaching means that in the teaching process, according to the teaching objectives and the characteristics of the teaching objects, through teaching design, rationally select and use modern teaching media, and organically combine with traditional teaching methods, participate in the whole teaching process together, use various media information For students, a reasonable teaching process structure is formed to achieve the optimal teaching effect. Multimedia computer-aided instruction refers to the use of multimedia computers to comprehensively process and control various media information such as symbols, language, text, sound, graphics, images, and video, and organically combine various elements of multimedia according to teaching requirements and pass them on th...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a blackboard for media teaching that is easy to wipe dust, which solves the problem that the current blackboard for media teaching needs to be wiped with a blackboard eraser bit by bit during the teaching process, which is a waste of time. At the same time, it is inconvenient to use, which will also affect the quality of teaching

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