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AC9M2A02: Year 2 Mathematics Content Descriptor – Algebra
AC9M2A02 Year 2 Mathematics

AC9M2A02 – Year 2 Mathematics: null

Strand
Algebra
Substrand
Algebra

This Content Descriptor from Year 2 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

recall and demonstrate proficiency with addition facts to 20; extend and apply facts to develop related subtraction facts

Elaborations

  • • using ten-frames or materials such as connecting cubes to develop and record addition and subtraction strategies including doubles, near doubles, counting on, combinations to \(10\) and bridging to \(10\), explaining patterns and connections noticed within the facts
  • • partitioning and rearranging collections to practice and develop fluency with addition and subtraction facts to \(20\) leading to the recall of these facts; for example, partitioning using materials and part-part-whole diagrams to develop subtraction facts related to addition facts, such as \(8 + 7 = 15\) therefore, \(15\space – \space7 = 8\) and \(15 \space– \space8 = 7\)
  • • using partitioning to develop and record facts systematically; for example, “How many ways can \(10\) birds be spread among \(2\) trees?”, \(10 = 10 + 0\), \(10 = 9 + 1\), \(10 = 8 + 2\), \(10 = 7 + 3\), …; explaining how they know they have found all possible partitions

Achievement Standard This Supports

This Content Descriptor contributes to the following Achievement Standard:

Year 2 ASMATY2
Year 2 Mathematics Achievement Standard
By the end of Year 2, students order and represent numbers to at least 1000, apply knowledge of place value to partition, rearrange and rename two- and three-digit numbers in terms of their parts, and regroup partitioned numbers to assist in calculations. They use mathematical modelling to solve practical additive and multiplicative problems, including money transactions, representing the situation and choosing calculation strategies. Students identify and represent part-whole relationships of halves, quarters and eighths in measurement contexts. They describe and continue patterns that increase and decrease additively by a constant amount and identify missing elements in the pattern. Students recall and demonstrate proficiency with addition and subtraction facts within 20 and multiplication facts for twos. They use uniform informal units to measure and compare shapes and objects. Students determine the number of days between events using a calendar and read time on an analog clock to the hour, half hour and quarter hour. They compare and classify shapes, describing features using formal spatial terms. Students locate and identify positions of features in two-dimensional representations and move position by following directions and pathways. They use a range of methods to collect, record, represent and interpret categorical data in response to questions.