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AC9M1N02: Year 1 Mathematics Content Descriptor – Number
AC9M1N02 Year 1 Mathematics

AC9M1N02 – Year 1 Mathematics: null

Strand
Number
Substrand
Number

This Content Descriptor from Year 1 Mathematics provides the specific knowledge and skills students should learn. Use it to plan lessons, create learning sequences, and design assessments that align with the Australian Curriculum v9.

Content Descriptor

partition one- and two-digit numbers in different ways using physical and virtual materials, including partitioning two-digit numbers into tens and ones

Elaborations

  • • building knowledge and understanding of the part-part-whole facts to \(10\), using physical and virtual materials; for example, using virtual ten-frames through a digital app or website to identify pairs of numbers that combine to make \(10\)
  • • using physical and virtual materials to partition numbers into counts of tens and ones; for example, recognise \(35\) as \(3\) tens and \(5\) ones or as \(2\) tens and \(15\) ones
  • • using part-part-whole reasoning and physical or virtual materials to represent \(24\), then partitioning \(24\) in different ways and recording the partitions using numbers; for example, \(10, 10\) and \(4\) combine to make \(24\) or \(10\) and \(14\) combine to make \(24\)

Achievement Standard This Supports

This Content Descriptor contributes to the following Achievement Standard:

Year 1 ASMATY1
Year 1 Mathematics Achievement Standard
By the end of Year 1, students connect number names, numerals and quantities, and order numbers to at least 120. They demonstrate how one- and two-digit numbers can be partitioned in different ways and that two-digit numbers can be partitioned into tens and ones. Students partition collections into equal groups and skip count in twos, fives or tens to quantify collections to at least 120. They solve problems involving addition and subtraction of numbers to 20 and use mathematical modelling to solve practical problems involving addition, subtraction, equal sharing and grouping, using calculation strategies. Students use numbers, symbols and objects to create skip counting and repeating patterns, identifying the repeating unit.They compare and order objects and events based on the attributes of length, mass, capacity and duration, communicating reasoning. Students measure the length of shapes and objects using uniform informal units. They make, compare and classify shapes and objects using obvious features. Students give and follow directions to move people and objects within a space. They collect and record categorical data, create one-to-one displays, and compare and discuss the data using frequencies.