Page 23 - Numeracy Skills
P. 23

DOUBLING AND

                       HALVING





                 •   Children work with a partner.  Each have their 6
                     bricks randomly placed on the desk.
                 •   Teacher calls out any number (up to 6), e.g.
                     2. Children must place any 2 bricks in front of
                     them.
                 •   Teacher calls out either “double” or “halve”.
                 •   Child performs the action of either placing 2
                     bricks to double, or remove a brick to halve.
                 •   Teacher calls out the answer - double is 4
                     bricks and half is 1 brick.
                 •   In the case of halving 3 or 5 bricks, the children
                     can show where the half would be.  (answer 1½
                     or 2½ bricks)


                 Variations:
                 •   Work in groups of 4 to 6 to halve and double
                     larger numbers.
                 •   The same activity, except use the studs

                     to halve or double.  E.g.  How many studs                                DOUBLING
                     is half / double using 2 bricks?
                                                                                 AND HALVING


                                                                                            WITH DICE


                                                                       For this activity you will need dice.


                                                           •  Children work in groups of 6 and place their bricks
                                                              in a pile together.  Select one child to start the
                                                              game with a dice.
                                                           •  The first child throws the dice and says the number
                                                              that is shown.  He / She then builds the number
                                                              using DUPLO bricks.  E.g. dice shows 4.  Place 4
                                                              bricks in a row.
                                                           •  The second child finds and matches the number of
                                                              DUPLO bricks - doubling the number of bricks.
                                                           •  The child must then say the number of bricks. E.g.
                                                              The child places another row of bricks next to the
                                                              original 4.  4 + 4 is 8.  8 is double.  4 is half of 8.
                                                           •  The game continues until each child has had 3 or 4
                                                              turns to throw the dice and to build the double.
                                                           •  The game can be extended by using 2 dice.


                                                           Variations:

                                                           •  One dice could have double / half.  The other dice

                                                              could have numbers.  Throw both dice - whatever
                                                                number comes up do the action indicated on the
                                                              other dice.
                                                                 21


                                                                                                                 14-06-2021   18:49:27
         Book 3_Numeracy Skills.indd   21
         Book 3_Numeracy Skills.indd   21                                                                        14-06-2021   18:49:27
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