In this first lecture, we dive into the basics of perimeter – what it is, why it matters, and how to calculate it for squares and rectangles. Students will learn simple formulas, understand the difference between perimeter and area, and solve real-life word problems. From fencing playgrounds to decorating notice boards, this fun and practical lesson will help learners measure like pros! Includes solved examples, derivations, and exercises. Perfect for classroom learning, revision, and self-study.