Teresa's grandfather tells her that time travel is possible. Can he be serious? How can it be true? CSI Chapters is a leveled collection of 25 original chapter books in both hard copy and interactive e-book formats that are designed to accelerate comprehension development, vocabulary acquisition, and content literacy. The fiction titles include financial literacy themes, science fiction, and realistic fiction. The nonfiction titles are designed to support students' reading comprehension across science, math, and social studies as well as general nonfiction. Using a metacognitive learning approach to support and scaffold students, CSI Chapters gives students the confidence and skills needed to tackle any text.