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ACTIVE LEARNING
                                               ACTIVE LEARNING





                                                                                                  Experiential Learning

                                                         ABACUS



                 An Abacus is the world’s first calculator. It is a calculating tool which has been used
                 since ancient times.


                 It consist of beads lined up on rods and is used for counting and calculation.

                 The abacus we use currently has 13 rods, and each rod has 5 beads.

                      The horizontal bar that divides the upper and lower part is called the beam.


                      The beads present in the lower part are called the lower beads.

                      The beads present in the upper part are called the upper beads.





                                     Frame                     Upper Beads

                                                                                                            Upper

                  Bar                                                                                        Deck
                 Rod

                                                                                                            Lower
                                                                                                             Deck








                                             Lower Beads            Unit’s Place




                 The column that is on the extreme right is for the one’s place.

                      The next column is used for the ten’s place.

                      The third column from the right end is for the hundred’s place and so on.

                        The top row is 5 times the bottom row. After 5 lower beads are counted, the
                      result is “carried” to the upper row.
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