The series is strictly based on CCE pattern and guidelines. Exercise is divided into two parts on the CCE pattern : Summative Assessment • Objective Type Questions• Short Answer Type Questions• Long Answer Type Questions Formative Assessment • Group Discussion• Think & Tell• Do it Yourself• Find it From your Surroundings• Play & Learn• Seminar• Quiz• Symposium• Activity• Projects• Model Making• Field Trip• Research Key Learning points are given at the start of the chapter. Definition with explanations in detail is given. Topic Related Activities as Suggested By NCERT and Issued by the CBSE are given. Note for the Teachers: Guidelines for the teachers to make the chapter interactive and interesting for the students. Term search: Certain difficult terms and their meanings are given at the bottom of the page. Insight: It represents a stimulating aspect of the topic, being discussed in the main section. Your Wisdom: Tries to bring in a new idea on the subject matter by simple questions. Innovative Activities: Many’easy to do activities’ help to reinforce ideas and concepts. Let us Revise: Questions are given to evaluate the understanding of the lesson. Quick Review: Summary of the chapter to recall the lesson. Keywords: Important terms used in chapter with their well-defined meanings. Discovery: Extra reading to know more about scientists and their discoveries. Formative Worksheet & Paper pen test based on the scholastic concept of evaluation on the textbook matter is given for students' self-assessment. Life Skill Activities & Report Book prescribed by CBSE have been given for teachers’ convenience. Teachers’ Resource Manual • It contains an exhaustive answer key to the exercises and tasks in the book. CD and Web Support Features of CD : • Chapters• Summative and Formative Exercises• Animated Activities• Wowser• Scientists and their Discoveries• Glossary• Life Skill Activities• Projects• Formative Worksheets • Summative Tests• Knowlympiad• Key to solutions