I love using Headbanz in therapy because it is so much fun to play… and it requires no reading! Most of the time, I will use this game along with a describing chart, especially with students who have a great deal of trouble with this skill.
For therapy, it is pretty straightforward. One student puts on the headband and the others try to describe what the picture is. If this skill is particularly difficult for the ones who are trying to describe, I will often give them binary choices or whisper the sentence they are supposed to say to them and let them repeat it to the headband wearer. As soon as the item is guessed, the students trade places and a different student becomes the headband wearer.
One variation to make the games more difficult is to play the game as you would the game Taboo. Instruct students that they must describe the picture without using certain words. For example, if the students are trying to describe a picture of a cat, you might instruct them that they may not use the words: meow, animal, or whiskers.
If you are using a point or check system for behavior management, I would give a check or point for every good description and one for each correctly guessed picture.
For fluency students, it is usually easiest to model what you want them to do first by describing one of the pictures using slow and easy speech, pausing, or whatever technique you are targeting with them in therapy and then have them copy you. (I NEVER use the timer with my fluency students!)
Once you students understand what you want them to do, this game can provide hours of speech practice. This is also an excellent game for students to play at home with their parents since it works on several skills at once.
The cards can also be used independently for drills or to practice describing skills.