"The Revised Edition Science Mission is a series of Science books specially created for users to understand scientific concepts in a simple and systematic way. Following the vision of the National Education Policy 2020 and the curricular goals of NCF 2023, great emphasis is placed on experiential learning through discovery-based, evidence-based and play-based activities. Activities given in the book will help a student sharpen scientific skills and also learn scientific concepts by exploring and doing things. A variety of subjective-type and objective-type questions have been given for self-assessment and evaluation at the end of each chapter.