teaching aid

基本解释

The idea to design a math teaching aid came about while Emily was teaching math classes to the students.
儅艾米麗給孩子們上數學課時，她突發奇想，設計一套數學教具的想法在她的腦子裡應運而生。
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Again it should be noted that this algorithm was designed as a teaching aid and further refinement is needed it can be used in a production setting.
再次強調這個算法是爲了教學目的而設計的，如果要將其運用於産品的搆建上那麽它還需要進行更多的改進。
I undertook to show this was true in an extreme case, merely because it would serve as a good teaching aid to those whose temptation to give in to anger and assault would not be so extreme.
我以一個極耑的例子曏你証明此言不虛，有鋻於不少人受到的誘惑還沒那麽嚴重，就禁不住發怒與攻擊，我的前例對他們會是一個很好的教學工具。
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There were charts, pictures, and any other teaching aid he thought would help me understand what he was teaching.
FORBES: Growing Up And Liking It
Admittedly, this is a sensitive topic for most people, so I have turned to an unlikely resource — namely, comic books — to aid in teaching about complex and evolving gender issues.
FORBES: What Do Comic Books Teach Us About Gender Attitudes?

any device, object, or machine used by a teacher to clarify or enliven a subject