1. In both Taking Terri Mueller and Three Sisters Mazer used a character's earliest memory in order to develop the mystery or to define a person, and Karen begins with her earliest memories of her sisters and her place in the family. Write a short paper on your earliest memories.

2. The acronym that the girls call themselves is Katoli, which stands for Karen, Tobi, and Liz. Research acronyms and how they are used by the government, private companies, and groups working for social change.

3. Read Dr. Kevin Leman's two books, The Birth Order Book and Growing Up Firstborn, about the attributes of children born first, middle, and last, and discuss whether the birth order in the novel parallels the ones he describes.

4. Compare other books by Mazer, especially Up in Seth's Room, to Three Sisters.