He began to work a problem on a "blackboard" with a piece of chalk.
他开始用粉笔在一块“黑板”上算题。
The work class's blackboard writing only then ADAPTS the student ability raise request, can play its proper role.
劳动课的板书只有适应学生能力培养要求，才能发挥它应有的作用。
A great way of displaying work is to use "washing lines" across the classroom or against a wall or blackboard.
展示学生作品的一个很有用的办法是用“晾衣绳”，把绳子从教室的一头拉到另一头或把绳子钉在墙上或黑板上。
A great way of displaying work is to use "washing lines" across the classroom or against a wall or blackboard.
展示学生作品的一个很有用的办法是用“晾衣绳”，把绳子从教室的一头拉到另一头或把绳子钉在墙上或黑板上。
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