Students often struggle with passive voice sentences. This is a fun little exercise which asks students to rewrite sentences that are thumping because of passive voice. Often on state tests students are asked to be able to revise a sentence to make it more effective. Recognizing passive voice errors can go a long way to helping them identify such problem areas in sentence construction.
As an extension students can further rewrite the sentences to integrate the Chicken Lightning, Clock, strategies offered in previous material from YBSolutions.