Work Sample : Bobby

Activity : Perimeter

    Perimeter - Bobby : Grade Commentary

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Bobby has demonstrated an adequate level of competence in calculating and recording perimeter measurements. A variety of four-sided shapes with perimeters of 20 cm have been drawn and labelled. Shapes other than squares and rectangles have been attempted but the measurements are not accurate. Bobby has recognised the possibility of constructing additional shapes but has not provided reasoning for this. A simple description has been provided but there is little mathematical reasoning or terminology. This work sample demonstrates characteristics of work typically produced by a student performing at grade C standard midway through Stage 3.

Grade C

The student has a sound knowledge and understanding of the main areas of content and has achieved an adequate level of competence in the processes and skills.

Full list of grade descriptions

Foundation Statement strands

The following strands are covered in this activity:

  • Working Mathematically
    Students ask questions and undertake investigations, selecting appropriate technological applications and problem-solving strategies. They use mathematical terminology and some conventions and they give valid reasons when comparing and selecting from possible solutions, making connections with existing knowledge and understanding.
  • Measurement and Data
    Students select and use the appropriate unit to estimate, measure and calculate length, area, volume, capacity and mass. They use 24-hour time in real-life situations and construct timelines. Students draw and interpret a variety of graphs using a scale.
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