An English teaching blackboard for drawing four-line grids

Abstract

The invention discloses an English teaching blackboard convenient for drawing four-line grids. The English teaching blackboard comprises a rear board and a front board, wherein a plurality of magnet bars are arranged on the rear surface of the rear board; a dust cleaning mechanism is arranged between the rear board and the front board; a fan with an upward opening is arranged at the bottom between the rear board and the front board; a filter net is arranged on the fan; the upper part of the filter net is provided with a plurality of iron particles of which the peripheries are coated with white paint; for solving difficulties and confusion in current English teaching, a double-board structure mode is adopted; the fan for blowing and raising is arranged between the rear board and the front board; the electric magnet bars are arranged on the rear surface of the rear board, and are arranged in a four-line grid mode; when the raised iron particles move to the electric magnet bars, the iron particles are absorbed together due to the action of the electric magnet bars, so that a four-line grid is formed by the iron particles; then writing can be performed at will on the front board, so that multiple times of writing can be performed on the front board; and the English teaching blackboard is worthy of application and promotion.

Description

technical field [0001] The invention relates to the technical field of English teaching tools, in particular to an English teaching blackboard which is convenient for drawing four-line grids. Background technique [0002] At present, the traditional English blackboard teaching is still dominant. In basic writing training and writing teaching, English standard blackboard writing is widely used. In order to write standardly, teachers need to draw the corresponding English four-line grid on the blackboard. When drawing the grid, use a long ruler to draw four lines line by line There are also teaching equipment such as a four-line grid device, an English three-line marking device, a parallel line marking aid, a blackboard with a ruler, and a blackboard for English and music teaching, although the purpose of drawing a grid can be achieved. , but it is a waste of time to carry utensils and draw grids with them at all times. [0003] The English teaching four-grid drawing tool in...

AI Technical Summary

Problems solved by technology

Its shortcoming is: this kind of blackboard eraser needs people to hold the slider to slide, people are more laborious in the pulling process, and the degree of automation is not high. The volume is large, the operation is time-consuming and laborious, and the drawn lines are inconsistent and unclear; more importantly, the drawn lines are not straight due to uneven force during the drawing process, which makes it difficult to control the strength and balance , not beautiful, greatly affecting the quality of teaching

But it still has the following problems: 1. The handwriting on the blackboard cloth is cleaned by lotion, and the blackboard cloth needs to be completely immersed in the lotion. After cleaning, the blackboard cloth is soaked, and it takes a while to wait for the blackboard cloth to dry before continuing to write , not suitable for classrooms with frequent writing; 2. The lotion cannot completely erase the handwriting on the blackboard cloth, which will cause inconvenience to the next writing; 3. The blackboard cloth is suspended, and the blackboard cloth is pressed inward when writing. , it is inconvenient to write

The impact of chalk on students' myopia For a long time, our teaching equipment has continued to use blackboards, metal green boards and chalk. The contrast is too strong, which can easily cause visual fatigue, which will cause the incidence of large areas of myopia among students

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