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.

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.

She used slides as a teaching aid.

她用幻灯片作教学工具.

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.

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.

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 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.