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1.3 Composition of numbers: 0–5


Created on 31 July 2017 by ncetm_administrator
Updated on 16 January 2018 by ncetm_administrator

Introduction

Apply the partitioning structure to the numbers to five, and introduce children to new concepts such as subitising, ordinality and the bar model.

Teaching points

  • Teaching point 1: numbers can represent how many objects there are in a set; for small sets we can recognise the number of objects (subitise) instead of counting them.
     
  • Teaching point 2: ordinal numbers indicate a single item or event, rather than a quantity.
     
  • Teaching point 3: each of the numbers one to five can be partitioned in different ways.
     
  • Teaching point 4: each of the numbers one to five can be partitioned in a systematic way.
     
  • Teaching point 5: each of the numbers one to five can be partitioned into two parts; if we know one part, we can find the other part.
     
  • Teaching point 6: the number before a given number is one less; the number after a given number is one more.
     
  • Teaching point 7: we can represent partitioning using the bar model.

 

 

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