Posing mysteries is not just a gimmicky way to increase the entertainment value of a lesson; it taps into students' innate human desire to explore and learn about their environments. Instead of coming right out and providing students with the answers, teachers can build suspense, piquing students' natural curiosity. Teachers can guide students, revealing one interesting plot twist after another, to the key knowledge or insight they want their students to learn. This article presents a few brief examples drawn from classroom materials and lesson plans that McREL, a nonprofit education research and development organization, has developed for NASA to help bring the science of unmanned space missions into schools and classrooms.