Bilabial Plosives
From TEFL World Wiki
A bilabial plosive in English is either /b/ or /p/ used at the beginning of a word as in /boy/ or /toy/.
These sounds can often cause pronunciation problems for learners of English as they are similar and difficult to differentiate between. There is a notable problem here for Arabic speakers where the sound /p/ does not exist.
Terms
In phonetics, bilabial means using both lips and plosive means to explode. In other words, the lips are closed blocking the expulsion of air from the mouth; the lips are then opened and the air rushes out.
Video
This video is a short explanation of one method to teach the difference between the /b/ and /p/ sounds to your class.
