These IGCSE Mathematics resources provide a complete, student-friendly lesson on expressing one quantity as a percentage of another and calculating percentage change.

The package includes four resources:

1. PowerPoint Presentation (16 slides): Large, readable text, clear explanations, essential formulas, and a fully worked example for each concept. Includes guided practice, common misconceptions, and an exit ticket.

2. Student Questions PDF: A 40-mark worksheet containing 20 progressively challenging questions on percentages, percentage increases, and percentage decreases. Includes space for calculations and two extension challenges.

3. Answers and Mark Scheme PDF: Complete solutions with step-by-step calculations, marking guidance, and answers to extension questions.

4. Presentation PDF: A printable, non-editable version of the lesson slides, suitable for revision or independent learning.

Learning objectives: Students will learn to express (x) as a percentage of (y), calculate percentage increases and decreases, identify original values correctly, and apply percentage calculations to real-world problems.

Suitable for: Cambridge and Pearson Edexcel IGCSE Mathematics, Foundation and Higher Tier.

Suggested lesson duration: 40–50 minutes.