NCTM2010 Annual Meeting & Exposition Session by Yeap Ban Har on Making Connections: Problems from Singapore Classrooms
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NCTM2010 Annual Meeting & Exposition Session by Yeap Ban Har on Making Connections: Problems from Singapore Classrooms

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In this session, Yeap Ban Har introduced to the participants challenging problems, mostly teacher-created ones, taken from Singapore classrooms.

In this session, Yeap Ban Har introduced to the participants challenging problems, mostly teacher-created ones, taken from Singapore classrooms.

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NCTM2010 Annual Meeting & Exposition Session by Yeap Ban Har on Making Connections: Problems from Singapore Classrooms NCTM2010 Annual Meeting & Exposition Session by Yeap Ban Har on Making Connections: Problems from Singapore Classrooms Presentation Transcript

  • MAKING CONNECTIONS
    problems
    from
    singapore
    classrooms
    Dr Yeap Ban Har
    National Institute of Education
    Nanyang Technological University
    Singapore
    banhar.yeap@nie.edu.sg
    Slides available from www.mathz4kidz.com
  • DaQiao Primary School, Singapore
  • 12 ÷ 4 = 3
    1 ÷ ¾ = ?
    View slide
  • 12 ÷ 4 = 3
    1 ÷ ¾ = ?
    1 ÷ ¾ =
    2 ÷ ¾ =
    3 ÷ ¾ =
    n ÷ ¾ =
    View slide



  • 12 ÷ 4 = 3
    making
    connections
    3 ÷ ¾ = 4

  • 12 ÷ 4 = 3

  • Primary Mathematics Standards Edition Grade 6



  • 210
  • 210
    MrsHoon sold 960 cookies.

  • A lion weighs 135 kg. A cow weighs 87 kg more than the lion. An elephant weighs 139 more than the cow. How heavy is the elephant?
    (Primary 2)
    TelokKurau Primary School, Singapore
  • 135 kg
    87 kg
    139 kg

  • A lion weighs 135 kg. A cow weighs 87 kg more than the lion. An elephant weighs 139 more than the cow. How heavy is the elephant?
    (Primary 2)
    TelokKurau Primary School, Singapore

  • After
    Shop A
    Shop B

  • 156 kg
    Before
    Shop A
    Shop B
    156 kg – 72 kg = 84 kg
    72kg
    3 units = 84 kg
    1 unit = 84 kg ÷ 3 = 28 kg
    72 kg – 28 kg = 44 kg
    Shop B sold 44 kg of rice.
    Shop A sold 44 kg of rice.
  • half

    $1890
    handbag
  • three-fourths

    $1890
    handbag
  • three-eighths

    $1890
    handbag

  • handbag
    $1890
    12 units = $1890
    1 unit = $1890 ÷ 12 = $
    $1200
    $690
    1 unit = $1890 ÷ 12 = $157.50
    $600
    $90
    35 units = $157.50 x 35 = $
    Her salary is $5512.50 .
    $60
    $30

  • apples
    192 + 24
    24
    pears
    8 units = 192 + 24 = 216
    1 unit = 27
    There were 5 x 27 apples at first.
    There were 3 x 27 – 24 pears at first.
    There were 78 more apples than pears at first.

  • 5 parts
    45
    women
    12
    men
    2 parts

  • women
    men
  • MAKING CONNECTIONS
    problems
    from
    singapore
    classrooms
    Dr Yeap Ban Har
    National Institute of Education
    Nanyang Technological University
    Singapore
    banhar.yeap@nie.edu.sg
    Slides available from www.mathz4kidz.com