Last modified on 22 July 2009, at 03:37

SAASTE Technology/Key Concepts/Grade 8

SAASTE Technology
Key Concepts
Grade 4 - Grade 5 - Grade 6 - Grade 7 - Grade 8 - Grade 9
Modules
Processing Grade 8/9 - Mechanical Systems Grade 9 - Structures Grade 5 - Structures Grade 8
Activities
Conductors & Insulators - Electronic Circuits - AND & OR Gates - Circuit/Systems Diagram - Hydraulics - Hydraulics & Pneumatics - Technological Products - Preservation-1 - Identifying Materials - Properties of Materials - Preservation-2 - Electroplating - Conditioning-Strengthening/Waterproofing-1 - Conditioning-Strengthening\Waterproofing-2 - Shaping - Forming - Forces - Types of Structures - Mechanisms Worksheet


KEY CONCEPTS, KEY FOCUS and IMPLICATIONS for TEACHING & LEARNING of Technology through the RNCS


Grade 8

Investigates:


  • background

context

  • Existing

products-compare- (relevant to problem and based on specified design aspects)

  • Practical

tests / testing

  • Data

handling (collect, extract, summarise, presents and

uses the information to justify and support decisions)


Systems & Control:


Mechanical advantage -in terms of how movement and force is influenced-(mechanical systems, hydraulic & pneumatic included)

  • Drawing

system diagrams

  • Input

- Process - Output


“AND” & “OR” logic. (more than one input / control device)

  • Input

- Process – Output

  • Drawing

circuit diagrams

  • Representations

using Truth tables

  • Drawing

system diagrams

Impacts:


technological products

(Express detailed opinion for positive and/or negative effects on quality of people’s life & on the environment)



Designs:


Design brief

Lists specifications and constraints based on specified design aspects.

  • possible

solutions- alternative- (linked to design brief & specifications and/or constraints.)

  • choice

of solution with reasons

  • chosen

solution developed further -(graphics and/or modeling)

Processing :


  • Forming,

Shaping or Conditioning a material by adapting them for particular purposes (increased strength, withstand forces, etc.)


Biases :


Human rights

(Opinions backed by factual evidence on effect of technology solutions)

Makes :


Planning

Materials list

Tools list

Construction techniques

Design adaption

Safety, material and tool use



Structures:


Frame Structures :

  • Structural

components.

Reinforcing techniques

Stability (as in grade 7)

all within the context of FRAME structures


Indigenous Technology:


  • Cultures

(Comparison of ways of solving similar problems in terms of their belief/value system)

Evaluates:


  • identifying

Strengths and weaknesses of: Product , System and of plan of action

  • Use

(given) criteria for evaluation

  • suggestions

for improvement / modification



Communicates:


  • 2D

(1st / 3rd angle) or 3D (isometric, perspective, oblique)

  • enhanced

sketches / drawings (colour/ shading/ rendering)

circuit diagrams (circuit symbols)

systems diagrams (input, process, output)

  • notes,

labels, dimensions, list of quantities.

SA drawing conventions (for above)

Appropriate use of Technology to present information for particular target audience