AC9M2N03 – Year 2 Mathematics: null

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.

Elaborations

• • creating halves of a range of collections sets by sharing collections into \(2\) equal groups; for example, comparing half of a set of \(12\) washers with half of a set of \(8\) bolts to identify how they both represent one-half of their respective set
• • creating halves using measurement attributes; for example, explaining that “a half is one part out of \(2\) equal parts of a whole”; equally folding a strip of paper, dividing a lump of playdough or separating a cup of water into \(2\) equal parts, then selecting one of the parts and naming it “one-half”; comparing half of a collection of \(10\) counters with half of a shape or object and explaining how each shows one-half of their respective wholes
• • using repeated halving to subdivide shapes and objects in different ways to make corresponding halves, quarters and eighths; naming the parts and comparing the size of them to notice that they are all the same size, and demonstrating that a quarter is a half of a half and that an eighth is a half of a quarter
• • dividing a shape into equal parts and relating the number of parts to the unit fraction; for example, if there are \(4\) equal parts then each part is a one-quarter and if there are \(8\) equal parts then each is one-eighth

Achievement Standard This Supports

This Content Descriptor contributes to the following Achievement Standard: