| Mathematical
and Other Requirements |
| 7.4 |
Mathematical
and Other Requirements |
The
knowledge and skills in mathematics which are relevant to science
and which are given below will not be exceeded in making assessments
in this specification. Candidates will not be prevented from demonstrating
achievement in science by mathematics which is excessively demanding.
The four rules applied to whole numbers and decimals and
to improper (and mixed) fractions
Use of tables and charts
Interpretation and use of graphs
Drawing graphs from given data
Reading, interpreting and drawing simple inferences from
tables
Vulgar and decimal fractions and percentages
Scales
Elementary ideas and application of common measures of rate
Averages/means and the purpose for which they are used
Substitution of numbers for words and letters in formulae
Square and square root
Conversion between vulgar and decimal fractions and percentages
Expression of one quantity as a percentage of another; percentage
change
Drawing and interpreting of related graphs
Idea of gradient
Transformation of formulae
Simple linear equations with one unknown
Elementary ideas and applications of direct and inverse
proportion.
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Units,
symbols and
nomenclature |
Units,
symbols and nomenclature used in examination papers will normally
conform to the recommendations contained in the following:
Signs, Symbols and Systematics . the ASE companion to 16-19
Science.
Association for Science Education (ASE), 2000. ISBN 0 86357 312
6
Signs, Symbols and Systematics . the ASE companion to 5-16
Science.
Association for Science Education (ASE), 1995. ISBN 0 86357 232
4
Any generally accepted alternatives used by candidates will be given
appropriate credit.
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Data
sheet and formulae list |
Data sheets
and formulae lists are not included with the question papers for
this specification.
Information
of this kind should not be provided to candidates for use during
examinations.
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Communication
skills |
AQA
takes care that candidates are not prevented from demonstrating
achievement in science by the use of language in question papers
which is inappropriately complex and hinders comprehension.
Similarly, while the assessment of communication is not a primary
function of this specification, candidates are required to demonstrate
scientific communication skills.
Scientific communication skills are specifically targeted by questions
in the Investigative Skills Assignment (ISA) part of the centre-assessed
unit. The externally set test for every ISA has a question in which
the scoring of marks is in part dependent on skills such as presenting
information, developing an argument and drawing a conclusion.
In addition, candidates will have difficulty in scoring the marks
for science in any of the written assessments if they do not:
ensure that text is legible and that spelling, punctuation
and grammar are accurate so that meaning is clear
present information in a form that suits its purpose
use a suitable structure and style of writing.
In presenting their answers, they will also need to use scientific
conventions (including chemical equations) and mathematical language
(including formulae) accurately and appropriately to score all the
available marks.
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ICT
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The subject
content of all GCSEs must require candidates to make effective
use of ICT and provide, where appropriate, assessment opportunities
for ICT. In science in the wider world ICT plays a crucial role,
and teaching and learning in the GCSE Sciences should reflect
this.
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Students
should be given opportunities to: |
Use
the internet (and other primary and secondary sources) to find
information or data
Use
sensors and dataloggers to capture data in practical work
Use
spreadsheets or databases for data analysis, for modelling or
to
explore patterns
Use
electronic resources e.g. software simulations, video clips
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Societal
aspects of scientific evidence |
A judgement or decision relating to social-scientific issues may
not be based on evidence alone, as other societal factors may be
relevant.
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Candidates
should know and understand |
The
credibility of the evidence is increased if a balanced account
of the data is used rather than a selection from it which supports
a particular pre-determined stance.
Evidence must be scrutinised for any potential bias of
the experimenter, such as funding sources or allegiances.
Evidence can be accorded undue weight, or dismissed too
lightly, simply because of its political significance. If the
consequences of the evidence might provoke public or political
disquiet, the evidence may be downplayed.
The status of the experimenter may influence the weight
placed on evidence; for instance, academic or professional status,
experience and authority. It is more likely that the advice of
an eminent scientist will be sought to help provide a solution
to a problem than that of a scientist with less experience.
Scientific knowledge gained through investigations can
be the basis for technological developments.
Scientific and technological developments offer different
opportunities for exploitation to different groups of people.
The uses of science and technology developments can raise
ethical, social, economic and environmental issues.
Decisions are made by individuals and by society on issues
relating to science and technology. evidence
Science
can help us in many ways but it cannot supply all the answers.
We are still finding out about things and developing our scientific
knowledge. There are some questions that we cannot answer, maybe
because we do not have enough reliable and valid evidence. For
example, it is generally accepted that the extra carbon dioxide
in the air (from burning fossil fuels) is linked to global warming,
but some scientists think there is not sufficient evidence and
that there are other factors involved.
There are some questions that science cannot answer at
all. These tend to be questions where beliefs and opinions are
important or where we cannot collect reliable and valid scientific
evidence. For example, science may be able to answer questions
that start .How can we ... such as .How can we clone babies?.
but questions starting .Should we ... such as .Should we clone
babies? are for society to answer.
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