One overhead projector set is available in the college as a teaching aid.
They are still often broadcast on television and used as a teaching aid.
He also created a teaching aid for the game, Autobackgammon.
Most educators then saw little potential in radio as a teaching aid.
It has been recommended as a teaching aid for science classes.
The department has developed a small museum as a teaching aid for students.
The museum is regularly used by schools, colleges and adult education groups as a teaching aid.
It was developed into a teaching aid to help children acquire reading and writing skills.
The film was used as a teaching aid in New York schools.
You want to buy a different club, to get this teaching aid.
