In addition to the field of education, chalk also plays an important role in conferences, speeches, and other occasions. In the conference room, chalk became a tool for attendees to record key points and discuss issues; On the podium, chalk helps the speaker draw charts and outline ideas, making the speech more vivid and powerful. The simplicity, clarity, and intuitiveness of chalk make it an effective way of communication in these situations.

In the field of education, chalk plays a crucial role. It is not only a tool for teachers to impart knowledge, but also a medium to stimulate students' thinking and inspire inspiration. In class, the teacher uses chalk to write knowledge points and draw charts on the blackboard, presenting complex concepts to students in an intuitive way. And students deepen their understanding and memory of knowledge by observing and recording chalk handwriting. The writing process of chalk is not only a transfer of knowledge, but also a collision of thinking and exchange of wisdom.

Dust free chalk adds trace amounts of chemical raw materials to the main ingredients, increasing the proportion. The chalk is written on the blackboard, without dust flying phenomenon, and is hygienic and clean, avoiding occupational diseases caused by chalk foam entering the internal organs through breathing. Add a small amount of smoothing agent and adhesive, the chalk should not touch hands and clothes, and the teacher should have no white marks on their fingers after a class, so there is no need to wash hands. Add a small amount of moisture-proof agent, which will not spoil when stored for a long time.

Dust free chalk is an improved product of ordinary chalk, aimed at eliminating classroom chalk dust pollution. It only adds oil or polyol substances as binders to ordinary chalk, and then adds fillers with higher density, such as clay, mudstone, cement, etc. This can increase the density and volume of chalk dust, making it difficult to fly away. However, in practical applications, its effect on reducing chalk dust pollution is not very obvious.