 Activity for teaching passive voice, Jenga. This is a simple, fun, and versatile idea if you have access to some Jenga sets, sometimes known as Tumble Down Tower. This is best played in groups of 2-6 students, so you'll need enough sets to suit your class size. Write a verb on each block an erasable ink, or on slips of paper that you put face down on the table, remember that only transitive verbs can be used for passive. Write passive and active on separate slips of paper or card, and also put these face down with each set. Students take turns in taking out a block, and turning over a card then making sentences in either active or passive as appropriate. If the other students agree that the sentence is correct, the next student has a go. If it's incorrect, they must repeat the process. The idea is not to be the student that causes the tower to collapse. Have an amusing forfeit, for example, if they do, they must clean the classroom. You can restrict this to one tense or allow the use of any tense depending on the focus of your lesson.