Page 20 - steps 3b.pdf
P. 20

21

                                  •  Colourful fractions  •  •  •  •  •                •  Equal divisions        ••••••
      ~:l'N:*I'~                                                                                                                           ~:l'I'l~I'~
            PAGE 30               IT]  For each shape a to g, write the fraction that is coloured.   Paul drew a  line 15 cm long.  He divided it into 3 equal ports.   PAGE 31

                                      0fJ5J                                                    5cm            5c~           5uY'1
                                                           •
                                                 b
                                                                                                           is t.na  50' ...... 1!.  c<S   /5cI>I -";3  = 5CN\.
                                                                       ~  He  wrote:  :t of ISCM:5c.1VI
                                      e
                                                                                           Draw lines of these lengths.  Divide them into 3 equal ports.
                                                                                           Write about each one in the same way as Paul did.
                                      &           'w  g\\\\\\                              a  6cm   b  gcm   c  12cm
                                                                                       m Draw lines of these lengths,  Divide them into 4 equal ports.
                                  I]J  For each shape, a to g, write the fraction that is nat coloured.
                                                                                           Write about each one in the same way.
                                                                                           a  Bcm   b  16cm   c  20cm
                                                              []]  Write about the shapes
                                    For shape a           I      b to g in  the same way
      rn           [gJ              Sam wrote     i" is white.   as Sam .              I]J   Choose 4 more lines to draw. Divide them into equal ports.
                                                  ~ Is  red.
                                                                                           Write about them in the same way.
      a  l tr      a  ~              (jg         "1+i=! = 1
         5            5                          .--.. --                              m Write a story about this picture.
      b  £  or 1   b  !!  or  £
         6    3       6    3
      C  ~ or 1    c  ~ or 1        CHALLENGE
         6    2       6    2
      d  ~         d  1
         4            4             * i+t·i· ,                                                                        ··,Jq;n ree-Ctf4'l rt..ets
      e  ~         e  ~             Write more fractions                                                               *whole *5ho.re.
         8            8
                                    whose sum is  1 .                                                                  *ho.ppy ;..<   .~
      f   4   1    f  (;.~ or £
        Iowa  or "3   I()   3                                                                                         *eq,v.ClI  *fo';r
      9  ~         9  ~           ma                                         jSTEPS  3b:12!                                         ED


      00                                                                                 rn                       [gJ                       00

      b  k is blue     c  ~ is  brown   d  i is red      ~ ~ ... are all equal to  1.    a  k of  6cm = 2cm        a  t of  Bcm = 2cm       Open: choosing 4 more
                                                                                            is the same as           is the same as         lines to draw, divide
         ~ is whi~e       ~ is white       t is white
                                                         Challenge                          6cm -;- 3 =  2cm         Bcm -;- 4 =  2cm       into equal parts and
         1+£-1            1  +1 - 1        ~ +1- 1                                                                                          write about.
         33-              2   2-           4   4-                                                                  b  t of  16cm = 4cm
                                                         Open: writing more              b  k of  qcm = 3cm
      e  i is yellow   f                9  ~ is yellow   fractions (all with the            is the same as           is the same as
                                                         same denominator)                  qcm -;- 3 =  3cm         16cm -;- 4 =  3cm      ~
         i is white                        ~ is white
                                                         whose sum is  1. (1/3b)
         ~+~-                              2   3_                                        c  k of  12cm = 4cm       c  t of 20cm = 5cm       Open: write a story
         8   8-                            5  +5-                                           is the same as           is the same as         about the unfair
                            4,1                                                             12cm -;- 3 = 4cm         20cm -;- 4 = 4cm       ·sharing of a pizza.
                            "\Z;  i'  10                                                                                                   . (1/3 a,b)
                            2·    ~
                             1·~  '5
                             )
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