A wealth of evidenced based activities to support students to write better sentences. It has been proven that expanding and imitating sentences supports enhanced writing of more complex sentences. (Sentence studies are similar to mentor sentences.)
There are sentence studies, stretch the sentences, add predicates and subjects, task cards, scrambled sentences, to name a few of the activities in this packet. There are over 70 printable activities for students that work well at literacy centers, whole class or small group instruction.