Chapter 10-13: Tree Diagrams (Conditional - Higher)

Higher (Grades 4-9) Paper 2 (Calculator) Paper 3 (Calculator)

📝 GCSE Exam Technique

  • Exam dates: Paper 1 (May 15), Paper 2 (June 4), Paper 3 (June 11), 2025
  • Time per mark: ~1-1.5 minutes (90 minutes for 80 marks)
  • Show all working: Method marks available even if final answer wrong
  • Check answers: Use estimation to verify reasonableness
  • Command words: Read carefully - "calculate" vs "estimate" vs "explain"
  • Multi-step problems: Break into smaller parts, label each step
  • Grade maximization: Secure easy marks first, attempt harder questions after

⏱️ Time Management Strategy

Target completion time for this topic in exam: 3-6 minutes

Foundation Tier: Expect 1-2 questions worth 2-4 marks total

Higher Tier: Expect 1-3 questions worth 3-6 marks total

Strategy: If stuck after 2 minutes, move on and return later

Key Concepts and Revision

This topic is essential for GCSE success. Focus on understanding the methods and practicing exam-style questions under timed conditions. Review examiner reports to avoid common mistakes.

Real Past Paper Questions

Question 1 (AQA 2023) 3 marks
Work out: [Exam question for Tree Diagrams (Conditional - Higher)]

✓ Mark Scheme

Step 1: [Solution step] (1 mark)

Step 2: [Solution step] (1 mark)

Answer: [Final answer] (1 mark)

⚠️ Common Mistakes (Examiner Reports)

  • Not showing working - loses method marks
  • Misreading the question - underline key words
  • Arithmetic errors - check calculations
Question 2 (Edexcel 2022) 4 marks
Calculate: [Multi-step exam question]

✓ Mark Scheme

Working: [Complete solution]

Answer: [Final answer] (4 marks total)

⚠️ Common Mistakes (Examiner Reports)

  • Incorrect order of operations
  • Forgetting units in final answer
  • Rounding too early in calculations

📊 What Different Grades Look Like

Grade 4-5 (Foundation/Higher):

• Can complete basic questions with standard methods

• Shows clear working for straightforward problems

• May make occasional arithmetic errors

Grade 6-7 (Higher):

• Handles multi-step problems confidently

• Recognizes which method for each question type

• Rarely makes calculation errors

Grade 8-9 (Higher):

• Solves complex problems efficiently under pressure

• Adapts methods for unfamiliar question formats

• Shows sophisticated problem-solving strategies

📝 Key Command Words

Calculate Work out the answer showing all steps
Work out Similar to calculate - show your method
Find Calculate the value, showing method
Show Prove through clear working
Hence Use your previous answer
Explain Give mathematical reasons

⚡ Quick Revision Summary

  • Core method: [Key technique for this topic]
  • Common mistake: [Most frequent error to avoid]
  • Exam tip: [Specific advice for exam questions]
  • Time saving: [Quick method or shortcut]
  • Check answer: [How to verify solution]
  • Formula sheet: [What's provided vs memorize]
  • Papers: Paper 2,Paper 3
  • Typical marks: 2-6 marks per question