Exemplar for Internal Achievement Standard Science Level 1. Investigate the implications of the properties of metals for their use in society

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Wendy Douglas
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1 Exemplar for Internal Achievement Standard Science Level 1 This exemplar supports assessment against: Achievement Standard Investigate the implications of the properties of metals for their use in society An annotated exemplar is an extract of student evidence, with a commentary, to explain key aspects of the standard. These will assist teachers to make assessment judgements at the grade boundaries. New Zealand Qualification Authority To support internal assessment from 2014

2 Grade Boundary: Low Excellence 1. For Excellence, the student needs to investigate, comprehensively, the implications of the properties of metals for their use in society. This involves analysing the links between the chemical and physical properties of at least two metals and the implications of their use in society. The student has comprehensively investigated the chemical and physical properties of aluminium and copper (1), and comprehensively linked these properties to their use by society, especially for copper (2). For a more secure Excellence, the student could provide more evidence to fully link the science to the implication(s) on society. For example, the student could discuss more fully how the properties of aluminium relate to its use by society.

3 Grade Boundary: High Merit 2. For Merit, the student needs to investigate, in depth, the properties of at least two metals for their use in society. This involves making links between the physical and chemical properties of metals and the implications for their use in society. The student has investigated in depth the science of the properties of copper, lead and aluminium, with a special focus on copper and the reactivity of calcium (1). The implication for society has been explained in depth for physical properties (2). For example, the way in which the uses of lead and copper relate primarily to their physical properties is described. To reach Excellence, the student could comprehensively explain how chemical and physical properties are linked to their use by society. For example, the student could explain how aluminium is used in aircraft because it is strong and flexible (physical properties) and it forms a tough oxide coat that protects the pure metal (chemical property).

4 Grade Boundary: Low Merit 3. For Merit, the student needs to investigate, in depth, the properties of two metals for their use in society. This involves making links between the physical and chemical properties of at least metals and the implications for their use in society. The student has investigated and explained the science behind the properties of copper and magnesium (1). Links between physical properties and chemical properties and implications for society have been explained (2). For example, the properties of copper and magnesium are explained and linked to a use. For a more secure Merit, the student could explain in depth how chemical and physical properties affect how society uses metals. For example, the student could explain how magnesium is also used in magnesium wheels because of its physical properties.

5 Grade Boundary: High Achieved 4. For Achieved, the student needs to investigate the implications of the properties of at least two metals and describe their use in society. This involves, for example, giving an account of the properties of metals and the implications for their use in society. The student has investigated and described some properties of copper and aluminium (1) and the uses are described (2). To reach Merit, the student could explain in greater depth how the properties of the two metals affect their use. For example, the student could explain that copper is a good conductor of heat and electricity due to its loosely held electrons.

6 Grade Boundary: Low Achieved 5. For Achieved, the student needs to investigate the implications of the properties of at least two metals and describe their use in society. This involves, for example, giving an account of the properties of metals and the implications for their use in society. The student has investigated and described the properties of two metals, lead and copper (1), and described links between the physical properties of these metals and their uses in society (2). For a more secure Achieved, the student could describe how physical and chemical properties affect the way in which society makes use of two metals. For example, the student could explain that copper is used in water pipes because it is unreactive, and lead is used as sinkers because it has a high density which means that it is heavy.

7 Grade Boundary: High Not Achieved 6. For Achieved, the student needs to investigate the implications of the properties of at least two metals and describe their use in society. This involves, for example, giving an account of the properties of metals and the implications for their use in society. The student has described the properties of two metals, copper and lead (1) and mentioned some uses (2). To reach Achieved, the student could clearly describe the properties of two metals, describe more uses, and explain how these uses are linked. For example, the student could explain that copper is a good conductor of electricity, and that this leads to its use in electrical wires.

Exemplar for Internal Achievement Standard. Biology Level 2

Exemplar for internal assessment resource Biology for Achievement Standard 91160 Exemplar for Internal Achievement Standard Biology Level 2 This exemplar supports assessment against: Achievement Standard