A compelling reason to learn something can make all the difference in students’ motivation to learn it. Motivation, in turn, is one of the key attitudes that drives learning. This story presents students with a compelling puzzle of a fatherless snake. The puzzle motivates students to learn about meiosis and mitosis, since the only way to explain the origin of the fatherless baby is by mastering details of meiosis. During the process, students work through the major steps in meiosis, compare and …