Page 105 - New Medley 2_Semester 2
P. 105

PUZZLE                                        • Critical thinking



         A.  Here  is  a  number  chain  based  on  all  the  four  operations

              ( +, –, × or ÷). Put any appropriate sign in the circle                                 to join
              the number chain.


            Start   1            ÷    1 ⇒ 1                2 ⇒ 2               2 ⇒ 4               0

                                                                                                   ⇓
                        3            17 ⇐ 9                8 ⇐ 20             12 ⇐ 3               4


                           ⇓
                        20            4 ⇒ 5               10 ⇒ 50             15 ⇒ 35              5


                                                                                                   ⇓

                    Finish    8 ⇐ 32                      24 ⇐ 1               24 ⇐ 17              7


         B.  Put  the  numbers 0–9 suitably in the boxes to complete the
              operations.

             1.                        2.                        3.                       4.
                        ÷    4    2          7    ×        35              –         3              +        15
                    +        –                        +                ÷        ×               ×        ÷

                        ×         27              ÷         0              +         1              –         5

                                                                                               72        2
                   17                                  7               7        0

                                         MATHS LAB ACTIVITY                                     • Experiential learning



        Aim: To develop the kids to express a situation using
        division facts

        Materials: 10 cups and 90 seeds

        Method: Each student counts certain number of seeds

        and takes 10 cups. Let a student count 24 seeds.

            1.  Ask the students to keep all the counted seeds in a single cup
                 and then use a division fact to express it.


                 Suppose, a student keeps 24 seeds in a cup.
                 This can be written as 24 ÷ 1= 24.


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