A complete classroom-ready resource pack for Chapter 1: Proof, focused on proof by contradiction. It covers negating statements, even and odd integer arguments, rational and irrational number proofs, non-existence proofs, and the classic proof that there are infinitely many primes. Designed for Pearson Edexcel International A Level Mathematics.

This bundle supports independent student learning, teacher-led explanation, structured practice, extension work, timed assessment, marking, and cover-teacher delivery.

WHAT IS INCLUDED

• presentation_slides.pdf — complete teachable slide deck for classroom or cover-teacher delivery.
• student_notes.pdf — student-facing explanations, key vocabulary, proof frames, worked mini-examples, common mistakes and quick checks.
• worked_examples.pdf — fully worked original examples with clear proof-by-contradiction structure.
• practice_questions.pdf — routine to challenging practice questions with working space and mark allocations.
• challenge_questions.pdf — harder proof tasks, extension reasoning and error analysis.
• mini_assessment.pdf — timed assessment-style task set with 28 marks.
• mark_scheme.pdf — detailed answers, method marks, acceptable alternatives, common errors and partial-credit guidance.
• lesson_plan.pdf — structured classroom lesson sequence with starter, main teaching, checks, differentiation and plenary.
• teaching_notes.pdf — teacher guidance, misconception support, questioning prompts, mini-whiteboard checks and cover-teacher notes.