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Research in Mathematics Education; Mathematical Challenges For All ,
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Problem Collections and "The Unity of Mathematics":
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New ICMI Study Series; Building the Foundation: Whole Numbers in the Primary Grades ,
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Quantities, Numbers, Number Names and the Real Number Line:
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The Legacy of Felix Klein; ICME-13 Monographs ,
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Is the Real Number Line Something to Be Built, or Occupied?:
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New ICMI Study Series; Building the Foundation: Whole Numbers in the Primary Grades ,
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