A Murder Scene to Teach the Passive Voice:

credit cards, alluding words on the board, overturned chairs, victim,

letter,…etc.)
Prepare a shadowed photo of the supposed `killer`. (preferably one of the students)
Prepare some handouts.
Let your class out until you finish preparing the `murder scene`.
Goad your students to use as many adjectives as possible to describe the supposed killer.
Guide your students in producing passive sentences about the murder scene (the form and use of passive should be already taught)
E.g. The knife is tainted by the victim`s blood.
Finally, let your students induce the rule of the passive voice.

for your students.
Practice the use of adjectives through describing the

supposed `criminal`.
Drill students on the use of the passive voice through writing sentences about an `unknown` doer (In this context, the subject is an unknown criminal).
After writing sentences in the passive voice, the general rule (structure) of the passive sentence can be induced.

students.
The preparation of the scene may take some time. Sometimes,

when the tutor is rushing to cope with the given course calendar, the `murder scene` may look inconvenient.
It is inappropriate to present the `murder scene` to students without teaching the passive voice in prior.

Limitations

as well as S-S interaction.
It represents a good method to

teach the passive voice.
It is an inductive and implicit way to teach the passive.
It requires some preparation before the lesson.