For faster navigation, this Iframe is preloading the Wikiwand page for 黑板.

黑板

此條目没有列出任何参考或来源。 (2015年8月25日)維基百科所有的內容都應該可供查證。请协助補充可靠来源改善这篇条目。无法查证的內容可能會因為異議提出而被移除。
黑色的黑板
深綠色的黑板

黑板是能讓粉筆於上面標記的平面,通常用作書寫

黑板可以是一塊漆了深色顏料(通常是深綠色或黑色)的板。黑板下方通常會有一個窄長的架,能放置粉筆和黑板擦,有些會裝有粉筆盒以收納粉筆、收集粉筆灰。

黑板常用於教學。用沾了水的布或黑板擦(一塊帶氈的木,或一個用布捲成的物體)便可輕易去除粉筆跡。在濕的黑板上書寫,那些粉筆跡難以抹除。

优缺点

黑板的缺點在於使用時會產生不少塵埃(就粉筆的品質而定),有些人會因此而覺得不適,甚至引致呼吸困難。一部份人長時間用粉筆書寫後,與粉筆接觸的手指皮膚可能會發炎。可是,其他展示資訊的方法更昂貴且亦有不足之處,所以至今黑板在教室裡仍然被廣泛使用。但在一些地方,例如辦公室,不會產生塵埃的白板開始漸漸取代黑板。

白板相比,黑板有如下优势:

  • 粉笔不需要额外养护;白板笔使用后需要盖上笔帽
  • 相对于白板笔,粉笔的价格更低廉
  • 粉笔气味温和;白板笔多有刺鼻气味
  • 粉笔痕迹容易被清除;长时间留在白板上的字迹需要特殊溶剂擦除
  • 织物上的粉笔可以轻易脱落;白板笔一般会对布料形成永久性染色
  • 不易反光

相關條目

外部連結

{{bottomLinkPreText}} {{bottomLinkText}}
黑板
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?