A complete 50-minute introductory IGCSE Economics lesson covering scarcity and the basic economic problem. Students explore how finite resources and unlimited wants make choice necessary. The lesson also introduces goods and services, needs and wants, and the effect of scarcity on individuals, businesses and governments. Designed for Year 10 students studying Cambridge IGCSE Economics, including syllabus content 1.1.1. Included: Editable 18-slide PowerPoint presentation Two-page student worksheet Complete answer key Five-page teacher guide with timings, questioning prompts, misconceptions and differentiation Optional vocabulary support sheet Editable DOCX and print-ready PDF versions Read Me and licence information Lesson activities include: THB 1,000 choice challenge Goods and services classification Needs versus wants discussion Scarcity Detective activity True or false assessment Two-mark exam-style exit question The PowerPoint is designed for Microsoft PowerPoint and may also be imported into Google Slides. Some fonts, spacing or transitions may require minor adjustment after conversion. This is an independently created teaching resource. It is not endorsed by or affiliated with Cambridge International Education.