老师在黑板上写字时,粉笔会渐渐变短,老师只能回头到讲台上取新粉笔。有时,老师把粉笔放在黑板槽里,这样取粉笔倒是很方便,但是由于黑板槽里有许多粉笔末,老师每次取粉笔时都会沾上,而且粉笔末对手有害。为了解决这个问题,我受家里墙上筷子笼的启发,发明了悬挂式粉笔盒。悬挂式粉笔盒非常简单,就是把盒子用磁铁(适用于铁质黑板)或吸盘(适用于任何质地、表面光滑的黑板)吸在黑板上,老师讲课时可以上下左右 When the teacher writes on the blackboard, the chalk gradually gets shorter and the teacher can only turn back to the podium to take the new chalk. Sometimes, the teacher put the chalk in the blackboard slot, so it is very convenient to take the chalk, but because there are a lot of chalks in the blackboard slot, the teacher will get stuck with each chalk, and the chalk is harmful to the opponent at the end. In order to solve this problem, I was inspired by the chopsticks cage at home and invented the hanging chalk box. Hanging chalk box is very simple, that is, the box with a magnet (for iron blackboard) or sucker (for any texture, surface smooth blackboard) sucked on the blackboard, the teacher can lecture about up and down