Concepts explained through simple and interesting activities Each activity enriched with appropriate diagrams and illustrations Simple and easily comprehendible language Step-by-step presentation of procedure Activities included to self-evaluate the understanding of the concept A variety of questions to help evaluate application and analytical skills A variety of HOTS questions included to develop logical thinking and reasoning Viva Voce section given with each activity to help gain confidence to answer the questions orally Activity Help Sheets given at the end of each book as a support material to do the activities given in the exercise section