Page 252 - SK Year 5 Mathematics DLP
P. 252

y
                      SOLVE THE PROBLEMS                                               entrance
                                                             6                        B
                 1   The Cartesian plane shows
                    the duty positions for four              5

                    school prefects. Jessica is
                    on duty at entrance A. The               4
                    distance of Resma’s duty
                    position from Jessica is                 3
                                                                           canteen
                    4 units horizontally and                                                       bicycle
                    3 units vertically. What is the          2                                     parking
                                                                                                    spot
                    coordinate of Resma’s duty
                    position?                                1
                                                                   entrance

                                                                 A                                    x
                                                             O        1      2      3     4      5


                  Understand the problem

                  •  Jessica is on duty at entrance A.
                  •  The distance of Resma’s duty position from Jessica is 4 units
                     horizontally and 3 units vertically.
                  •  Find the coordinate of  Resma’s duty position.

                 Plan the strategy       On the Cartesian plane, mark the distance of 4 units
                                         horizontally and 3 units vertically from entrance A.
                     Solve
                     y
                                                          Check
                    6

                    5                                     Coordinate of             Coordinate of
                                                          Resma’s duty              Jessica’s duty
                    4
                                                         position is (5, 3)        position is (1, 0)
                              Resma’s duty
                    3
                              position (5, 3)         Calculate the horizontal distance:
                    2                                 5 units – 1 unit = 4 units

                    1                                 Calculate the vertical distance:
                                                 x    3 units – 0 unit = 3 units
                    O     1   2    3    4   5
                           Jessica’s duty              The coordinate of Resma’s
                           position (1, 0)             duty position is (5, 3).


             244
                               7.4.1  • Guide pupils to solve problems by drawing a Cartesian plane.
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