Transcript Teacher Assessment Scheme (TAS)

Teacher Assessment Scheme
(TAS)
The Scheme involves continuous assessment
of various aspects of the candidates’
knowledge and abilities over the entire period
of the Advanced Level Course.
CHAN SHU KUI MEMORIAL SCHOOL
2002-2003 AL PHYSICS PRACTICAL
Contribution of each paper
•
•
•
•
A-level
Paper 1 (3 hr)
Theory
Paper 2 (3 hr)
Theory
Paper 3 (School Candidates) TAS
or
• Paper 4 (1 hr)
Practical
42%
43%
15%
15%
During the A-level course
• Each candidate is required to keep a
complete record of all the practical work
performed in the A-level Physics course
especially those used for assessment.
• A warning should be issued to students
who are frequently absent from
assessment activities, fail to submit work
for assessment or fail to meet the
minimum requirements.
Plagiarism and disqualification
• Any candidate who uses or is suspected of using
any unfair means is to be reported immediately to
the HKEA. If the HKEA is satisfied that a breach of
the regulations has occurred, the candidate will be
liable to be disqualified from the current A-level
Physics Examination or the whole of the current Alevel Examination.
• If a candidate is found to have engaged in
plagiarism, the teacher will have to discount
completely the exercise concerned and a mark of “0”
be awarded to that particular assessment.
By the end of the A-level course
• Candidates’ should return all assessed
work to their S7 Physics teacher for
custody after the theory examination.
Samples of candidates’ work will be
collected by the HKEA for moderation
purposes.
Making Assessments
• A scheme of marking (e.g. checklist) : to mark
different parts of the student’s work/written
reports
–
–
–
–
–
–
manipulation,
observations,
accuracy,
data treatment,
planning and
interpretation
• Impression marking
The assessment consists of two
areas :
• Performance in practical work
• Reporting of practical work
66.7%
33.3%
Criteria involved in assessing
performance in practical work
• The procedure for practical work is carried
out safely
• Work is done in an organised and efficient
way
• Apparatus are handled competently
• Instruments are used in appropriate ways to
make accurate readings and measurements
• Positive attitude towards scientific
investigation
REPORTING OF PRACTICAL WORK
• Quality of the written accounts on the
procedures and techniques
– Suitable techniques, including apparatus and
materials to be used, are stated.
– The procedure shows a logical ordering of
steps and is written up clearly
– Various precautions are mentioned and
explained.
REPORTING OF PRACTICAL WORK
• Quality of the recording and
presentation of results
– record of results indicates a high quality of
accuracy. Appropriate units are stated.
– Results are presented in appropriate forms
such as tables or graphs.
– Calculations where necessary are clearly
shown.
REPORTING OF PRACTICAL WORK
• Quality of the interpretation of the results
and conclusion
– Trends and patterns in data are recognized.
– Appropriate interpretations are made on the results in
relation to the problem under investigation.
– A clear awareness is shown on the limitations of the
methods used, sources of errors and their influence
on the accuracy of the results obtained.
– Suggestions for improvement in technique and for
further investigations are given where appropriate.
– Appropriate conclusions are drawn, supported by
reasoned arguments..
performance against an
appropriate mark scale
Mark Scale
Quality of work
Excellent
good
Fair
Average
Weak
not worthy of credit or no
suitable work submitted
for assessment
10-point scale
“Average”
is
9 - 10
taken to7 -indicate
8
the standard
5-6
3 - 4of an
expected
2
average1 -A-level
0
candidate.
SUMMARY IN PRACTICAL WORK
Assessment
Area
Min. No. of
Assessments
A
Performance
in
practical
work
4
(2 in each
year)
B
Reporting of
practical
work
8
Specific
Requirements

At least 2 full
reports.
Mark
Weight
Calculation
ing
Method
Total of best 4.
0 – 10 marks for
each
assessment
2 full reports
(double
weighting)
+ total of best 6.
0 - 10 marks for
each
assessment
66.7
33.3
Language Medium of TAS
• The language used in the reports in S.7
must be consistent with that chosen for
the written paper
Contents included in Full Report
•
•
•
•
Problem Statement / Title
Objectives / Abstract Diagram that
Scanned or
Theory
Photocopied from
Experimental Design textbooks are
Teacher’s Signature on
Notebook after Finishing
collect the data & setup
diagram (hand write).
NOT ALLOWED!!!
– Apparatus used
– Description of Design / Procedure
(include
Setup
diagram)
How
What
Whatwill
How
many
will
graphs
data
the
the
will
trials
data
or
variables
be
charts
will
be
collected?
interpreted?
bewill
be
completed?
controlled?
be based on
– Measurement / Observations
the data collected?
•
•
•
•
Data Evaluation (graphs, solving equations, numerical calculation)
Error Analysis
Summary & Conclusion
Possible Improvements of the experiment /
Discussions
• References
TOTAL: 10 MARKS
Student checklist for lab. period
• Have you got the Lab. Notebook, a graph paper book &
the Lab. Manual?
• Do you have a sharp pencil, an eraser, a calculator & a
transparent ruler?
• Do you have the appropriate appearance of eager
anticipation?
• Have you prepared the experiments by studying the
manual?
• Have you read the lab. Manual before coming the
Laboratory?
• Have you read the introduction of graphs, errors, &
significant figures?
BONUS
• Encourage the use of I.T. in handling the
reports.
– Use word processor like Microsoft Words to
type the full report.
– Use Spreadsheets program like Microsoft
Excel to plot graph
Remember…
•
•
•
•
Keeping a lab. Notebook
Record all reading directly
Do not rely on your mental arithmetic
Record reading in tables with name & unit on
each columns
• Do not overwrite numbers, cross out the wrong
no. & record the new one alongside
• Record all observations
• Use plenty of space
Remember…
• Take average readings from raw data
• Check the order of magnitude
• Ask yourself whether your calculation or
measurement looks reasonable
• Suppress meaningless digits arises from
calculation (avoid round off too crudely, check
that inaccuracies introduced by rounding-off are
negligible compared with the experimental error.)
• Always estimate errors in experimental
measurements & calculations
• Only quote errors to one (or maybe two) sig. fig
Remember…
• Plot the dependent variable along the vertical axis & the
independent one along the horizontal axis
• Label the axes with name & unit
• Plot points as small dots in circles or crosses
• Include error bar it there are errors in the variables
• In general, put a smooth curve through the points, not a
zig-zag
• Plot the graph as the experiment proceeds
• When straight line obtained, it means the expression is
in the form y = mx + C
• Use spreadsheet programs to plot graph for high
accuracy
Remember…
• In write up full report, DO NOT REPEAT obvious details
& theoretical derivations that may be given as
background in the laboratory manual
• It is suggested to write the theory, procedures,
measurements … in your OWN words, direct copy from
lab. Manual; use copy & paste or even scanned from
textbooks is prohibited
• The language written in the report should be concise
& objective, never refer yourself as “I” but rather
“WE” instead. Even better, take you away & use
“Passive Voice”, in particular, for the procedure of
the experiment, use past tense
*** THANK YOU ***
Please prepared the experiment
A1 – Centripetal Force (P.28-30)