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Course expanding: 34 9CH0 lessons with attributed videos, follow-up questions, worked reasoning, explained quizzes and external resources. See the course plan for remaining coverage.
9CH0 · Issue 3 · February 2024
Study the lessons in order, or use the topic search to revisit a weak area. Each video has questions to try, and the written explanations remain available without watching.
Paper 1: 1 h 45 min, 90 marks, 30%. Paper 2: 1 h 45 min, 90 marks, 30%. Paper 3: 2 h 30 min, 120 marks, 40%. Practical Endorsement is separate.
Read the official 9CH0 specification (opens in a new tab)Specification reviewed 25 October 2026. Lesson references identify a section or topic; they do not certify complete coverage of every outcome within it.
Still being added
Use the official specification and your teacher’s practical and tier checklist alongside these lessons.
Your specification
Follow the course sequence or choose the section you need. Open the course plan for coverage and assessment details.
Topic explorer
Search lesson titles or choose a module. Open a chapter to see its lessons.