One way to ensure students can identify and recognise a particular sound is to play this game based on individual sounds or phonemic symbols.
Get the students standing in a circle or a series of circles. They are then given a sound, for example the 'ee' from sheep. They are also given a semantic field, for example, Parts of the Body, and they must throw a ball to each other whilst giving a word with the that particular sound, for example, cheek. The person who catches the ball then throws it to someone else in the group and gives another part of the body with that particular sound, for example, knee. If someone says the word chin, for example, they have to sit down. The winner is last one standing. They are also practising vocabulary, of course.