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Published by:
                          Orange Education

                    (An Imprint of Orange House Pvt Ltd)
                      9, Daryaganj, New Delhi-110002
                  Phone: 011-43776600     +918588814859
                      Email: info@orangeeducation.in                         PREFACE
                     Website: www.orangeeducation.in
                           IE Code: 0511063121
                                                            All of us live in the midst of technology. We depend on
                               Branches:                    technology for every aspect of our lives such as, education,
                           • Chennai • Guwahati             communication, entertainment, designing, medicine, etc. The

                                                            list is endless.
                        Regional Marketing Offices:
                                                            Information  and communications technology (ICT)  has also
                     • Ahmedabad • Bengaluru • Bhopal
                   • Bhubaneswar • Dehradun • Hyderabad     become an integral part of our education system. Computer
                    • Jaipur • Jalandhar • Kochi • Kolkata    Science  is  now  not  limited  to  just  teaching  definitions  and
                    • Lucknow • Mumbai • Patna • Raipur     commands.  Instead,  it  helps  the  learners  to  understand
                                • Ranchi                    and  appreciate  the  varied  uses of  computers  and  its vast
                                                            applications. The young learners must be equipped with the
                      International Marketing Offices:      correct tools to utilise this amazing machine. At the same time,
                            • Dubai • London
                                                            they also have to be aware of the demerits and harmful effects
                              © Publishers                  of the technology, if it is misused.
                    No part of this publication can be reproduced,   We have tried to make the learning experience interactive
                    distributed, or transmitted in any form or by any
                         means, including photocopying,     and hands on for the young learners.  Touchpad PLUS
                  recording, or other electronic or mechanical methods,   (Version 2.2) is based on Windows 10 and MS Office 2016.
                  without the prior written permission of the publisher.
                                                            This series contains five sections:
                               Disclaimer
                   All product names, brand names and product logos     Digital World section introduces fundamental and
                   mentioned or shown in this book are trademarks,   application  concepts  to  embrace  computer  science  and
                            registered trademarks,
                    or trade names of their respective owners. The   integrate them with other subjects and skills.
                  reproduction of these product names, brand names,     Cyber World section covers Internet literacy and makes the
                        and product logos and all instances
                  of references of proprietary software in this book, are   students aware of cybercrime and cyber security, website
                          for educational purposes only.
                                                              development, etc.
                   Although every safety measure has been taken to     Computational Thinking  section  includes  interesting
                    verify the precision of the information contained
                        herein, the author(s) and publisher    and engaging activities on Reasoning, Visualisation,
                  assume no responsibility for any error or omission. No
                  liability is assumed for damages that may result from   Interpretation, Critical Thinking, Information Processing and
                      the use of information contained within.  Algorithmic Intelligence and thereby making them smarter.
                          School Fee Protection*               Coding World section introduces students to the world
                  School fee protection is an initiative by Orange Education   of coding and thus developing their problem solving and
                  to protect student’s fee in case of demise of the earning
                   parent. Orange Education will bear the tuition fee of   logical skills.
                    beneficiary as long as school remains subscribed to
                   our books. All claims are subject to terms & conditions     Artificial Intelligence (AI) section takes the students on a
                     available on the website of Orange Education.  voyage to the world of latest trends like Robotics and AI
                   As per the guidelines given by FEPI (Federation of   along with an AI game, making them future ready.
                         Educational Publishers in India)
                  “When labeled as an ‘Evaluation Copy’, this book denotes   We hope that the book enables the children to learn the
                   that it has been given to schools at no cost and is not for   concepts with not only the purpose of gaining knowledge but
                   commercial sale. Therefore, it may be reclaimed if not
                   part of the designated curriculum, ensuring the prudent   also to be able to find its applications. We look forward to any
                     use of resources and preventing national loss.’’  suggestions for improving the book.

                   Published and Distributed by Orange House Pvt Ltd                                        —Publisher
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