- Student's Book (Coursebook): The core textbook with clearly-structured lessons, reading, listening, and speaking activities. The learning is centered around an intriguing detective mystery storyline that unfolds across the units.
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Writing Booklet: A dedicated booklet that provides structured, step-by-step guidance and practice exercises for developing writing skills and creative expression.
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Clues/Secret Notes: This component, often titled "My Secret Notes", contains the clues and evidence necessary for the students (who act as junior detectives) to solve the mystery. This actively engages them in critical thinking, observation, and collaboration.