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Warm           Circle the pictures in which people are                        21 st

                      Up!            using machines.                                             Century   #Critical Thinking
                                                                                                   Skills























                 How do Machines Work?                                                                                     9  WHAT ARE MACHINES?



                              Friends,  we  all  know  that  we  need  energy  to  work.  Similarly,

                              machines  also  need  energy  to  work.  Different  machines  require
                              different types of energy to work.



                  Some machines work                 Some machines run                   Some machines

                  with the help of                   on fuel, such as an                 run on electricity,

                  human power, such                  aeroplane, a car, and               such as a washing

                  as a bicycle and a                 a bus.                              machine, a fan,
                  sewing machine.                                                        a mixer, and a
                                                                                         refrigerator.












                  Computer Ethics                                                         Century   #Leadership & Responsibility
                                                                                            21 st
                                                                                            Skills
                             We should never pull or play with the wires connected to our computer.

                             We should always keep our computer neat and clean.

                             We should not eat or drink near our computer.
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