LEARNING AREA: TECHNOLOGY

LESSON PLAN GRADE 9

TERM
_____2__ / CONTENT IN CONTEXT
PROCESSING
How material can be processed ...to improve the properties (life–span), e.g. galvanising; painting; vanishing and electroplating. / DURATION
____7weeks___
Selected LO’s and AS’s / Integration
Across / Statement of the Problem / Learning and Teaching Activities / Details of assessment / Barriers to Learning / Date completed
LO1: Technological processes and skills
AS: Investigate
AS: Design
AS: Make
AS: Evaluate
AS: Communicate
LO2: Technological knowledge and understanding
AS: Processing
LO3: Technology, Society and the Environment.
AS: Indigenous
Technology
AS: Impact
AS: Bias / Within:
LO 1,2,3
Across:
NS
MATHS
EMS
SOCIAL SCIENCE
ARTS AND CULTURE
LANGUAGES / Statement of Problem
Metal objects at your home tend to loose their finish and colour because corrosion starts to eat up their surface. This causes their general appearance not be pleasing.
As a grade 9 Technologist, how can you help your parents to improve and protect the finish of these objects? / Activity 1: (Teaching Activity)
How the material can be processed to improve the properties (life –span), e.g. galvanising, painting, vanishing and electroplating.
Activity 2: (Learner Activity)
Assignment (Individual)
-  Learners ask parents, grandparents or older members of the community if they know of any traditional methods of protecting paint or wood.
-  They share information with the class.
-  They explain why rusting is a bigger problem for people who live at the coast, than people living inland.
-  Learners then complete the given table in their workbooks, which summarises the processes used to protect wood or metals. (Refer to the table attached) / Forms
Research / Assignment
Case Study
Test
Project
Methods
Teacher
Peer
Group
Self Assessment
Tools
Memorandum
Rubrics
Checklists
Worksheets
Selected LO’s and AS’s / Integration
Across / Statement of the Problem / Learning and Teaching Activities / Details of assessment / Barriers to Learning / Date completed
Activity 3: Investigation
The learners look for electroplated items and bring them to the classroom e.g. spoons, knives, metal ornaments, dressing rings, and earrings.
They draw a list of these items and identify whether they are galvanized, copper plated, brass plated or chrome plated. They then record their findings by completing the given table. Learners are also required to :
·  Note their findings before, and at a later stage of teaching and learning ...... they do a recording on the recording sheet after electroplating.
·  The recording is done in respect of texture, colour and brightness.
Activity 4: (Case Study)
Metal objects at your home tend to loose their finish and colour because corrosion starts to eat up their surfaces. This causes their general appearance not to be pleasing. As a grade 9 Technologist, how can you help your parents to improve and protect the finishing of these objects?
Questions:
1.  Identify the nature of the problem
2.  Write down two possible solutions to the problem.
3.  Choose the most appropriate solution and motivate your choice
Activity 5:
Learners formulate a design brief and specifications.
What would you take into consideration when electroplating metal? Write down two suggestions.
Selected LO’s and AS’s / Integration
Across / Statement of the Problem / Learning and Teaching Activities / Details of assessment / Barriers to Learning / Date completed
Activity 6
(Teacher input) - The teacher communicates and explains to the learners the process of electrolysis and also demonstrates electroplating.
(Learner Activity) Learners design a 2D or 3D sketch to illustrate the apparatus and process to be followed in electroplating.
Activity 7; Making
Learners are to illustrate the steps to be followed in the process of electroplating by means of a flow diagram.
Resource Activity: Learners start electroplating the object/s, This is done under the supervision of the teacher.
Activity 8: (Evaluation)
Learners evaluate their attractive electroplated objects (artefact) according to :
·  texture
·  colour and
·  brightness
Activity 9
Learners present evidence of their electroplated objects, and the process of work by means of a project portfolio.
(Communication – The learners communicate the process followed by means of short portfolio)
RESOURCES: Copper leads; distilled water; copper salphate; drawing instruments; tools: pliers; wire stripper; plating tank; battery; charger; side cutter and relevant objects
EXPANDED OPPORTUNITIES: More practical demonstrations or tests to be done by faster learners.
REFLECTIONS: That which has succeeded or failed and possible reasons are benchmarked for the next lesson