Stepping Into Mark Twains World. Take a trip back to nineteenth century America and learn how Mark Twains world shaped his writing. By stepping into his world, students will gain a better understanding and appreciation of his works, and their relevance to modern-day audiences. This nonfiction title builds critical literacy skills while students are engaged in reading high-interest content. Featuring TIME content, this purposefully leveled text was developed by Timothy Rasinski, a leading expert in reading research. The intriguing sidebars feature fun facts that challenge students to think more deeply about the topics and develop