Download Circ.12 of 2002 Moderation of Practical Examinations for Technical

UMnyango WezeMfundo
Department of Education
Lefapha la Thuto
Departement van Onderwys
Circular 12 / 2002
Date: 20 February 2002
Topic
Enclosure(s)
Moderation of Practical Examinations for
Technical Subjects, Home Economics,
Hotelkeeping and Catering, Needlework and
Clothing and Travel and Tourism for the Senior
Certificate Examination
Annexure A: Criteria for the assessment of
Grade 12 subjects with a practical component
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Distribution
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Enquiries
Principals and Staff of all Ordinary
Secondary Schools, and Schools for
Learners with Special Education Needs;
All Divisional Managers and Senior
Managers at Head Office and District
Offices;
Members of School Governing Bodies;
Teacher Organisations and Unions;
Relevant Non-Governmental Organisations.
The Office of the Senior Manager of the District or in Head
Office to:
Mr. Pierre de Villiers Tel: (011) 355 – 0629 / 082 6970 982
Mr. Louis Grobler Tel: (011) 355 – 0629 / 082 8819 073
Office of the Chief Executive Officer
Room 1009, 111 Commissioner Street, Johannesburg, 2001
P.0.Box 7710, Johannesburg, 2000
Tel: ( 011 ) 355-1511 Fax: ( 011 ) 333-5546E-mail: [email protected] OR [email protected]
Page 1 of 21
1.
INFORMATION
1.1
This circular outlines the criteria for the assessment of practical work. (See attached
Annexure A)

1.2
1.3
NB: For Art, Dance, Drama and Music refer to Circular 5/2001.
Principals/heads of institutions and District Examination Assistant Directors are
responsible for ensuring that Portfolios and Art Practical are returned to the
schools from the Districts or Cluster marking centres at the end of Art Practical
marking sessions.
Moderation of practical work will take place between 17 July 2002 and 08 August 2002,
and will continue between 16 September 2002 and 20 September 2002.
Moderation will be conducted in all subjects listed in the table below:
SUBJECT
BRICKLAYING AND PLASTERING
BUILDING CONSTRUCTION
ELECTRICIAN’S WORK
ELECTRONICS
FARM MECHANICS
FITTING AND TURNING
HOME ECONOMICS
HOTEL KEEPING & CATERING
METALWORK
MOTOR MECHANICS
MOTORBODY REPAIRING
NEEDLEWORK & CLOTHING
PLUMBING & SHEETMETAL WORK
TECHNIKA CIVIL
TECHNIKA ELECTRICAL
TECHNIKA ELECTRONICS
TECHNIKA MECHANICAL
WELDING & METALWORKING
WOODWORK
WOODWORKING
GRADE
SG
SG
SG
SG
SG
SG
HG & SG
SG
SG
SG
SG
SG
SG
HG & SG
HG & SG
HG & SG
HG & SG
SG
SG
SG
1.4
Moderators will inform principals of their intended visit at least FIVE working days
prior to the visit and the educator must be present during moderation.
1.5
All learners for all subjects mentioned above are required to make themselves
available on the day of the moderation. In some instances, learners may be requested
to remain after school for moderation to be completed. Candidates who are absent for
the Practical Moderation must provide an appropriate doctor’s certificate and/or other
documentation/evidence confirming the reason for absence and forward
it to the District Assistant Director: Examinations within seven days.
Page 2 of 21
Candidates who do not submit a medical certificate will have incomplete results and
failure to submit a practical mark before June of the following year will result in
cancellation of the theory and portfolio mark.
PLEASE NOTE:
Dates and times of the Home Economics Practical Examinations must be arranged
and finalised by educators with the facilitator via their District Offices.
Schools without workshops and/or facilities for practical moderation must
communicate in writing with the moderator for that subject. Contact details of
moderators are obtainable from the District Assistant Director: Examinations.
Failure to communicate with the moderator will jeopardise the results of candidates
taking practical subjects in these schools.
2.
HANDLING OF MARKSHEETS
2.1
A computer-generated mark sheet will be forwarded to each school during July 2002.
2.2
The following procedure needs to be followed:
2.2.1
Subject educators are required to have their draft/working mark sheets,
assessment criteria and breakdown of how the final mark for each learner
was derived. The marks as given by the educator must be transferred onto
the computer-generated mark sheets.
2.2.2
The original copy of the computer-generated mark sheet, which reflects
the final practical marks awarded to the learners, and their examination
numbers signed both by the educator and the principal, should be made
available to the moderator during his/her visit to the school.
2.2.3
The moderator will moderate the work and adjust the marks on the
computer-generated mark sheet where necessary. The moderator must
sign the original copy of the computer-generated mark sheet and retain a
copy.
2.2.4
The principal must retain the original copy. The principal is responsible
for submitting the corrected mark sheet to the District Assistant Director:
Examinations by Monday 23 September 2002.
The Principal must ensure that the Assistant Director: Examinations
acknowledges receipt by entering it in the mark sheet receipt book.
2.2.5
Principals are required to keep a copy of all mark sheets submitted.
2.2.6
As the instructional leader of the school, the principal must
discuss the outcome of the moderation with the relevant
educator.
Page 3 of 21
3.
2.2.7
All candidates must have a practical mark. Please note that candidates
will not receive their results if their practical marks are outstanding.
2.2.8
A letter written by the principal of the school must accompany the mark
sheet where a candidate has left school during the course of the year.
PROCEDURE FOR APPEAL
Should the school wish to appeal against issues related to moderation of practical
examinations, such appeal must be done in writing to the District Assessment
Official within three days after receiving the adjusted marks. (The appeal form will
be made available to schools during July 2002.)
4.
CONCLUSION
An earnest appeal is made to all Senior Managers at the District Offices and to
principals for their co-operation in ensuring that the moderation of practical marks is
successfully executed.
____________________
MALLELE PETJE
CHIEF EXECUTIVE OFFICER
Page 4 of 21
ANNEXURE A
CRITERIA FOR THE ASSESSMENT OF GRADE 12 SUBJECTS WITH A
PRACTICAL COMPONENT
ASSESSMENT OF PRACTICAL WORK FOR TECHNICAL SUBJECTS
GENERAL CRITERIA
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Processes used in the execution of tasks
Quality of workmanship
Knowledge of techniques, equipment and materials
Skills in using equipment, materials and techniques
Attitudes – safety regulations, workshop practice and habits, organizational
ability
Degree of difficulty
Functionality
Planning
Accuracy
Correctness of calculations
Neatness including drawings
1. TECHNIKA: CIVIL
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Layout of buildings on site
Standard procedure of determining quantities of building materials
Set up of Slump Test
Soil tests
Drawing of sections and views of dwellings
Layout of frames and trusses
Drawing of gusset plates
Application of all relevant safety precautions
Determine and calculate the centroids of regular and irregular lamina
2
BUILDING CONSTRUCTION
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Layout of buildings on site
Standard procedure of determining quantities of building materials
Set up of Slump Test
Soil tests
Drawing of sections and views of dwellings
Layout of frames and trusses (on flat surfaces)
Drawing of different fixing methods on structures
Estimation and ordering of building materials
Placing and care of concrete
Use and care of tools
Page 5 of 21
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Reading and interpretation of plans and symbols
Hanging of doors (use of existing door)
Drawing of one- and two-pipe systems
Erections and care of scaffolds
Pattern developments (on cardboard, paper and plate)
Making different wood joints
Determination and calculations of areas, circumferences and volumes of building
materials using existing buildings
3
BRICKLAYING AND PLASTERING

Calculation and determination of quantities of building materials (existing
buildings to be used)
Layout of building foundations on site
Knowledge of different sands and aggregates
Performing a Slump Test
Knowledge of different bonds and joints (use of improvised scale blocks)
Digging of trenches for drainage purposes
Knowledge of erecting scaffolds
Knowledge of pile driving
Plastering techniques
Knowledge of steel fixing for concrete slabs, beams and columns
Scale models of shuttering for columns and beams
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4.
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PLUMBING AND SHEETMETALWORK
Pattern development of different connections (paper, hardboard and metal to be
used)
Knowledge of one- and two-pipe systems
Different joints on piping (use off-cuts)
Working and placing of tabs, valves and drainage
Different soldering techniques and soldering materials
Scale models of flashing and gutters (paper, cardboard and metal to be used)
Use and care of all relevant tools and equipment
EDUCATORS ARE ENCOURAGED TO MOTIVATE LEARNERS TO ADOPT
THE PROBLEM SOLVING APPROACH TO PRACTICAL WORK (i.e. the
technological process of solving problems) The use of the technological process
is encouraged and the process followed by the learner must be documented and
presented with the solution. This process is to be assessed and included in the
practical examination mark.
Page 6 of 21
5.
METALWORK
GENERAL CRITERIA
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Quality of workmanship
Knowledge of techniques, equipment and materials
Skills in using techniques, equipment and materials
Attitudes – safety and workshop habits, perseverance, organizational
ability etc.

Degree of difficulty

Functionality

Design

Planning
Projects/models should incorporate most of the following processes,
depending on the availability of tools, equipment and materials.

Safe and correct use, care and maintenance of hand tools, machine tools
and accessories.

Measuring and marking – including use of micrometers.

Cutting and filing.

Joining metals:
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Soldering
Riveting
Welding – gas and arc
Formation of seams
Safe edges

Cutting of internal and external threads.
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Metal turning:
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Drilling
Facing
Parallel turning
Taper turning
Parting
Knurling
Screwcutting
Heat treatment:
 Annealing, tempering, hardening, normalising and case
hardening.
Page 7 of 21

Finishing and Polishing.
EDUCATORS ARE ENCOURAGED TO MOTIVATE LEARNERS TO ADOPT
THE PROBLEM SOLVING METHOD ( i.e. the technological process of solving
problems) The use of the technological process is encouraged and the process
followed by the learner must be documented and presented with the solution.
This process is to be assessed and included in the practical examination mark.
6.
WELDING AND METALWORKING

Pattern development of different connections (cardboard, metal and paper
to be used)

Reading and interpretation of structural drawings
Knowledge and application of different welding symbols
Layout of steel trusses
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7.
Layout of gossip plates
Joining methods
Procedures for setting up gas welding equipment
Practical ways of determining hardness of steel
Determination of centre of gravity for geometrical figures
Knowledge of different materials, tools and accessories.
MOTOR MECHANICS

Practical work to be related to the following aspects depending on the
availability of components and equipment.
CONSTANT VACUUM CARBURETTOR/MULTI BARREL
CARBURETTOR

In this section tune-up related to carbs could be tested i.e. setting of air
fuel ratios using co-tester/idling air correction etc.
COMPRESSION TESTING
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Pre-checks
Dry and wet testing
Comparison of cylinder balance to specification
DISTRIBUTOR

Mechanical testing
Page 8 of 21
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Electrical testing/condenser tests (3) resistance, insulation leakage and
capacity
Bench testing
Mechanical advance/vacuum advance tests/dwell angle
If no bench tester is available a timing light with dwell meter may be
used
Replacement of distributor and re-timing of engine and starting.
WHEEL ALIGNMENT
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Pre-checks
Camber checks
Caster checks
SA1 steering axel inclusion
Toe-in or toe-out
Turning radius / toe-out on runs
Tyre faults
STEERINGBOX (ANY) INCLUDING POWER STEERING
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Pre-checks
Total pre-load
Worn shaft pre-load
Lash adjustment clearance etc.
Overhaul
Use of relevant specifications to make adjustments i.e. worn shaft pre
load over centre adjustment or sector shaft pre load
General efficiency
ELECTRONIC IGNITION SYSTEMS


Simple wiring diagram of ignition system & testing
Battery testing
ALTERNATOR


Testing simple wiring to alternator and test charging system of vehicle
Test charging system output
CALCULATING ENGINE CAPACITY AND COMPRESSION RATIO

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Measure cylinder bore
Measure stroke length
Determine clearance volume
ENGINE DIAGNOSES
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Valve clearance
Tune-up / service:

Ignition timing
Page 9 of 21
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Point gaps
Spark plug gap
Starter voltage
FAULT FINDING ON ENGINES
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No spark
No fuel supply
Firing order etc.
HYDRAULIC DRIVES
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
Fluid coupling and torque conversion
Automatic gearboxes:

Dismantle

Identify parts

Power flow

Check friction

Assembly
8.
ELECTRICITY
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Use of ammeters
Use of voltmeters
Building simple wiring circuits
Warning lights for oil or water
Battery not charging light etc.
9.
TECHNIKA ELECTRICAL AND ELECTRICIAN’S WORK
Learners will be expected to demonstrate competency on a selection of
practical tasks during the moderation process. All learners must be
available on the day of moderation.
GENERAL CRITERIA
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Planning of task/project
Identification and purpose of components
Correct use of tools and equipment
Demonstration of skills and techniques
Functionality
Attitudes: safety, working habits, perseverance
Initiative/creativity
Comprehension.
Page 10 of 21
Measuring instruments

Correct use of the following meters:
Oscilloscope
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Multimeter
Energy meter
Watt meter
Power factor meter
Frequency meter
Task/project/activity
Safety precautions
Setting up
Measurement
Diagrams
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Connections to a circuit
Electrical current theory
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Task/project/activity
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Making use of the oscilloscope to measure:
Peak to peak values
Maximum values
Measurement of DC voltages
Do calculations of rms and average values
RCL Circuits
Task/project/activity
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Determine:
The effect of frequency change
The effect of higher or lower capacitance and/or inductance
Voltage measurement
Current measurement
Transformers
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Task/project/activity
Single-phase
Safety precautions
Diagrams
Connections
Construction
Measurement of voltage
Page 11 of 21

Three-phase
Safety precautions
Diagrams
Connections: 3 single-phase transformers in
different configurations
Construction
Measurement of line and phase values
AC Motors: Single-phase, Three-phase, Motor Starters
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Task/project/activity
Safety precautions
Diagrams
Connections
Construction
Installation to a circuit
Testing
Changing of direction of rotation with the aid of contractors
Wiring of Capacitor start / Capacitor start and run starters
Wiring of start-delta starters (Includes the automatic star-delta starter)
10
Electronics
Task/activity/project
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Rectification (half and full wave)
Amplifier circuits (As a switch and as an amplifier)
Testing
Construction
Additional task for Technika Electrical learners
Construction of the following circuits:
Amplifiers, oscillators, circuits using operational amplifiers, clipping and
clamping circuits, lamp dimming and speed control circuits.
Computer principles: application of logic gates with the aid of diode logic
and transistor resistor logic.
General
Any electrical or electronic project made by the learner will be accepted for
moderation.
11
TECHNIKA ELECTRONICS AND ELECTRONICS
Learners will be expected to demonstrate a selection of practical
tasks during the moderation process. All learners must be available
on the day of moderation.
Page 12 of 21
GENERAL CRITERIA
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Planning of task/project
Identification and purpose of components
Correct use of tools and equipment
Demonstration of skills and techniques
Functionality
Attitudes: safety, working habits, perseverance
Initiative/creativity
Comprehension.
RLC-Circuits
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The effect of frequency change.
The effect of higher or lower capacitance and/or inductance.
Voltage and current measurement.
Phase displacement
Semi-conductors
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Rectification (construction of a half, -full wave and bridge).
Switching of SCR, UCT, DIAC, TRIAC, FET.
Application of SCR, UCT, DIAC, TRIAC, FET.
Analysis of BJT configurations.
Testing a junction transistor to determine the lead info.
Amplifiers
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Single stage
Two stage
Measurement of input- and output wave forms
Calculation of gain
Switching and control circuits
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Construction of clipping and clamping circuits
Construction of lamp a dimming circuit
Construction of a Speed control circuit
Construction of series and shunt regulation of power supplies
Measuring input and output waveforms of the above
The effect of higher and lower input and output on regulation
Oscillators
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Construction of a Colpitts – and Hartley oscillator
Page 13 of 21
Computer principles
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Application of logic gates with the aid of diode logic and transistor
resistor logic
Proof of De Morgan’s law
Add two binary numbers with the aid of half- and full adders
Analysis of working principles of RS and clocked RS latches
Measuring instruments
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Safety precautions when using electronic measuring instruments
Analogue meters
Voltmeter (coupled in parallel)
Ammeter (coupled in series)
Calculate series and shunt resistors for above
Multimeter
Oscilloscope
Electronic equipment
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Analysis of radio receivers and radio Transmitters
Analysis of the monochrome television receiver
Analyses of the capacitance meter.
General
Any electronic project made by the learner will be accepted for moderation.
12.
FITTING AND TURNING
CALCULATIONS

Practical assignments based on calculations done in theory with reference
to:

Taper plug gauge,

Inner and outer dovetails

Distance between toolmakers buttons and

Angles and sizes on taper turning projects
TURNING

Parallel turning to close tolerance
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Tolerance on diameter to allow for a press fit

Facing to the correct lengths
TAPER TURNING
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External and internal taper done to correct dimensions
Page 14 of 21
Screw Cutting

Provide evidence of the following screw threads:

Metric thread

Multi-start thread

Acme or Square thread
MILLING

Procedure to center a milling cutter and cutting a single keyway

Using simple indexing to cut multi-faced surfaces

Using differential indexing to cut one tooth on a gearblank
GRINDING

Sharpening of different types of cutters on a cutter grinder using different
type of grinding wheels.
RESEARCH

Research by learners on the programming of numerical control machines
with special reference to the advantages and disadvantages of these
machines.
Note:


13.
Learners must be available for the practical moderation by the
external moderator.
Where facilities in the centre do not allow to complete aspects
above, written assignments must be available to show that
learners understand how to perform the specific operation on a
machine.
TECHNIKA MECHANICAL
General criteria:

Planning of the task or project

Identification of the problem, the purpose and components

Classification and interpretation of data

Correct use of tools, equipment and measurement procedures

Observation, prediction and deduction

Demonstration of skills and techniques

Functionality – formulation of hypothesis and control of variables

Attitudes with regard to safety, working habits, perseverance

Initiative and or creativity

Comprehension

Evaluation
Page 15 of 21
ORIENTATION
INDUSTRIAL HOUSEKEEPING
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Employee

Management

Tasks/projects/activity

Written assignments
TOOLS

Surface finish

Manufacturing technology

Measuring tools

Tasks/projects/activity

Assessing the problem

Making a drawing

Safety precautions

Setting up machining to measurement

Surface finish

Self evaluation by learner
MATERIAL
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Iron carbon diagram
Macro- and microstructure of steel
Standard tests
Gasses
Organic chemistry
Tasks/projects/activity:

Drawing up of diagrams

Calculating critical temperatures

Testing specimens of material to calculated points

Testing sample specimens by various methods

Drawing up of reports of the above results

Self evaluation by the learner
DIMENSIONAL CONTROL

Tasks/projects/activity

Interpretation of fits and limit systems and tables

Evaluation of a workpiece
PHYSICAL PRINCIPLES

Statics co-planar
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Polygon of concurrent forces in one plane

Equilibrium of rigid bodies

Stress and strain
Page 16 of 21
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Friction
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Suggested equipment

Experiments on forces in one plane
Bar loaded and supported by two bathroom scales
Steel cable to be used for a specimen in stress related experiments
Stress diagram interpretation and calculating from the supplied data
Drawing up a stress diagram from tensile tests
Tasks/projects/activity:

Assessing the problem

Making up of a drawing of the problem

Calculating the necessary data

Initiative and creativity

Completion and comprehension of the task

Evaluation by the learner self
Dynamics
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Work

Cinematics
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Relation between forces, mass and acceleration

Energy

Transfer of motion

Power
Heat
Gasses
Hydraulics
Tasks/projects/activity

Assessing the problem

Making up a drawing of the problem

Calculating given and assessed data

Initiative and creativity

Completion and comprehension of the task

Self evaluation by the learner
NOTE:
Schools that have not done any practical work to date could choose at least four
of the above tasks as a practical examination.
14.
WOODWORK
GENERAL CRITERIA
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

Quality of workmanship
Knowledge of techniques, equipment and materials
Skills in using techniques, equipment and materials
Attitudes – safety and workshop habits, perseverance,
organizational ability etc.
Degree of difficulty
Functionality
Design
Page 17 of 21
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Planning
Projects/models should incorporate most of the following processes,
depending on the availability of tools, equipment and materials.
Correct and safe use, care and maintenance of hand tools, machine tools
and accessories.
Preparation of timber
Measuring and marking
Joints:
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



Mortise and tenon
Dovetail
Housing
Half lap joints
Expansion joints – butt, rubbed glued, tongue and groove etc.
Mitre joints

Drawer construction:
Multiple dovetail
Rebates

Wood turning
Preparation of stock
Parallel turning
Faceplate turning

Fixing
Using screws and nails
of fittings e.g. hinges, handles and other
accessories

Assembly and finishing
EDUCATORS ARE ENCOURAGED TO MOTIVATE LEARNERS TO ADOPT
THE PROBLEM SOLVING METHOD ( i.e. the technological process of solving
problems.) The use of the technological process is encouraged and the process
followed by the learner must be documented and presented with the solution.
This process is to be assessed and included in the practical examination mark.
15.
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
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
WOODWORKING
Calculation and determination of quantities of building material (existing
buildings to be used)
Making of all relevant joints
Knowledge of all accessories
Hanging of doors (existing doors may be used)
Layout of roof trusses (on level surface)
Determining the rise, tread and landing of staircases
Knowledge of different adhesives
Drafting of cutting lists
Making of scale models where applicable. Learners are
encouraged to demonstrate understanding by making scale
models using any suitable waste material e.g. cardboard etc.
Scale models of shattering for columns and beams
Page 18 of 21
16.
NEEDLEWORK AND CLOTHING
General criteria
Educators must adhere to the following before the examination
session takes place.



Sewing-machines must be threaded and ready for use
All equipment must be available
Copies of the assignment sheet must be made available to the
learners.
Safe and correct use of machines and accessories are to be applied.
Some of the following needlework processes will be moderated:
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Laying out and cutting of pattern pieces
Box pleat
Darts
Tucks
Seams
Hems
Openings
Sleeves
Collars
Facings
Quality and neatness
Memorandum sheets for each learner must be available to the facilitator.
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17.
Computerised mark sheets must also be available.
HOME ECONOMICS
General criteria
Educators must adhere to the following before the examination session takes
place.
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The number of stoves will give an indication of the number of learners to
be moderated in a session. One learner per stove.
Copies of tests must be made available to learners one day prior to the
practical examination.
Ingredients and equipment must be made available on the day of the
examination.
Memorandum sheets for each learner must be made
available to the facilitator.
Computerised mark sheets must be made available.
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Safe and correct use of equipment is of the uttermost importance.
Some of the following will be moderated:
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Protein dishes
Flour dishes
Gelatine
Vegetables / Salads
Fruit
Basic pastry / ready made
Decorations / fillings / garnishing
During the cookery session the following is also to be moderated:
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Preparation
Neatness and hygiene
Method of work
Evaluation of dishes
Presentation – place-mat / tablecloth and correct serving utensils
Menu planning
18.
HOTELKEEPING AND CATERING
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General Criteria
Educators must adhere to the following before the practical examination
takes place:
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Menus and appropriate recipes must be planned beforehand by the Chef
de Cuisine in collaboration with the educator.
The educator must assign the various tasks to the learners in advance.
Use skilled learners in areas where they will perform to the best of their
ability.
Prepare a class list with the year’s practical marks for the facilitator.
The number of the candidate must be attached to the back of the uniform
and must correspond with the class list.
All learners must wear the appropriate uniform assigned for the task.
Planning and the necessary forms must be made available on the day of
the practical examination.
Computerised mark sheets must be available.
The following will be moderated:
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Menu / wine list
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Organisation in the kitchen (of utmost importance to maintain a smooth
flow of traffic from kitchen to the restaurant)
Correct laying of tables according to courses indicated on the menu
Serving of guests
Bar service / correct utensils - “waiter’s friend”
Front office
Preparation of food / skills
Safe use of equipment
Crisis management
Exquisite presentation of plated foods – garnishing / decoration
Neatness and hygiene
Time management
The following must be included in the menu planning:
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Protein – techniques eg. fillings, crumbed
Vegetables – techniques eg. julienne
Yeast
Gelatine
Sauce
Chocolate work
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