Chalks are used for writing on the blackboard. In the old days, the teachers used chalks for writing and teaching. And using a duster, the words and drawing on the blackboard could easily be erased. Therefore, using chalk was common and convenient.
Today, chalks are not commonly seen as it seems better to use the whiteboard markers. Whiteboard markers are preferred more than chalks because of cleanliness. Using chalks can be dusty, whereas, whiteboard markers do not have such problem.
When we are at Lashio, I was asked to teach an intensive course for college students. I was given chalks to use. It reminded me the old days. And at the beginning, it was challenging to use chalks. I tended to break a chalk for failing to use it tactfully.
What a challenge using the chalks to write and teach, but it is viable in a place of limited resources.
我们用粉笔在黑板上书写，而在过去，老师均使用粉笔进行教学。使用粉笔擦，黑板上的文字和图画可以很容易被删除。因此，使用粉笔在过去是常见且方便的方式。
今天，通常不容易看到粉笔，因为使用白板似乎更好。由于清洁因素，使用白板比黑版更加好，因为使用粉笔可能会產生飞扬的粉，而白板笔则没有这样的问题。
当我们在腊戍时，我被要求教一个密集專课班。我必须使用粉笔，而这让我想起过去的日子，刚使用粉笔时的确是一项挑战，因为没有技巧，我会不小心弄断了粉笔。
使用粉笔书写和教授是一项挑战，但它在资源有限的情况下还是可行的方式。
