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    RAPID RECALL                           Tick ( ) if you know this.

                          1.  Natural things are not made by humans.

                          2.  A machine is a human-made thing.

                      HOW MACHINES WORK?

                      Just like humans need food, machines need fuel, electricity or human power
                      to work. For example:

                      1.  Machines that use fuel to work.

                                                                     Bike

                                    Airplane
                                                                                                   Truck

                      2.  Machines that use electricity to work.

                                                                Computer

                                       Fan                                                         Iron

                      10      Premium Edition-I

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