In this hands-on, cross-disciplinary math/English course, students will learn about and manipulate logic, patterns, encryption, and rules as they explore and create language and numerical puzzles, ciphers, and codes. We will begin with some of the most famous poly-alphabetic encryptions in history, such as Julius Caesar’s shift/substitution cipher and the Jefferson-Lewis cipher. From there, we will combine STEM concepts including combinatorics, sequencing and series, looping, probability, algorithms, conditional logic, and game theory with concepts drawn from the field of linguistics: phonology (the sound patterns of language), morphology (words), expressions (syntax) and meaning (semantics). Students will strengthen their critical-thinking, abstract-reasoning, and metacognitive skills in both content domains by completing puzzles and reflecting on their work, both alone and in collaboration with other students. Students will create original puzzles, ciphers, and codes to reflect their learning. At the end of the semester, students enrolled in the course will work as a team to create a fully immersive escape-room experience for the student and faculty body at PCDS. Students must have completed Algebra II in order to enroll in this course.