Nurturing each child's initiative and enthusiasm is the prime purpose of the teaching process. To inculcate a creative mind with an initiative, we teachers have to treat children as participants in learning and not just passive receivers of a predetermined dose of knowledge. We have covered all the guidelines given in the Teachers' Manual in our book. Our book is in complete sync with the evolving CBSE and syllabus framed by NCERT. The National Curriculum Framework 2005, states that Science is a dynamic ever-expanding body of knowledge and it plays a liberating role in a progressive society. It suggests that at the upper primary stage, school children should be engaged in learning the principles of science through familiar experiences. NCF-2005 envisaged an evaluation system that would grade the students on their regular activities in classrooms and enable the students to understand and focus on their learning gaps. To implement the spirit of NCF-2005, the CBSE has introduced the grading system at the upper primary level for VI-VIII. Rachna Sagar Pvt. Ltd., known for its support to its valued students and teachers for achieving the desired goal, has come out with the comprehensive practice material. With the above considerations Zoom! in Science has been visualized. The format of this book takes a conscious step to emphasize the ethical, social and applied aspects of science and the growing importance of scientific concepts in our daily life. The salient features of this series are : (a) Note for the Teachers: These are the guidelines for the teachers to make the chapter interactive and interesting for the students. (b) Term Search: Certain difficult terms and their meanings are given at the bottom of the page. © Insight: As the term suggests it represents a stimulating aspect of the topic, being discussed in the main section. (d) Your Wisdom: It tries to bring in, a new idea on the subject matter by asking simple questions. (e) Innovative Activities: A number of ‘easy to do activities’ help to reinforce ideas and concepts. (f) Keywords: These are the important terms used in chapter with their well-defined meanings.