teaching aid

Graph is an visualized teaching aid, which is simple and clear.

图形是一种直观的教具, 具有简明清晰的特点.

Except blackboard and chalk, unbrella is their needed teaching aid.

除了黑板和粉笔, 雨伞成为必备的教具.

Appears before the multimedia teaching idea, in kind teaching aid played the extremely vital role.

在多媒体教学理念出现之前, 实物教具起了非常重要的作用.

People also use it as a teaching aid in designing.

人们同样用来做为设计的辅助工具.

The blackboard is a primitive teaching aid used for centuries.

黑板是一种原始的教学辅助工具,已经被使用了数百年了.

People now also use it as a teaching aid in designing.

现在人们还用它作为教学辅助设计.

She used slides as a teaching aid.

她用幻灯片作教学工具.