Surds - Jordan : Grade Commentary
Jordan has demonstrated thorough knowledge and understanding of surds. Numerical calculations only have been used to prove or disprove the rules, and generalisations have not been made. Proof by disproof is acceptable but proof by example, as in questions 3 and 4, is faulty as one set of numbers does not prove something is correct. Jordan has not provided generalisations about additional surd properties. This work sample demonstrates characteristics of work typically produced by a student performing at grade B7 standard at the end of Stage 5.
Grade B
The student has a thorough knowledge and understanding of the content and a high level of competence in the processes and skills. In addition, the student is able to apply this knowledge and these skills to most situations.
Full list of grade descriptions
Areas for Assessment
- Working mathematically
Knowledge, skills and understanding developed through inquiry, application of problem-solving strategies, communication, reasoning and reflection - Number
Knowledge, skills and understanding in mental and written computation and numerical reasoning
