SAASTE Technology/Modules/Structures 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

Frame Structures

SITUATION:

You have received a Hi-Fi / play station. It is a very expensive piece of equipment and needs to be kept safe. You will need to use the knowledge and skills of this module to address this situation. Your solution must be a frame structures that includes at least three structural elements you have learnt. (E.g. columns, beams, arches, buttress, struts, stays, guys and ties)

Structures have FIVE BASIC FORCES that acts on it. Structural elements are used to strengthen structures that are subjected to various forces that act on it

Activity 1: Research Task

Look at pamphlets, magazines, furniture stores and various structures to get information.

Cut out or Draw pictures showing how structures are strengthen by various structural elements.
Identify and Show at least 2 structural elements in each picture / drawing.
Make an A4 poster of these structural elements with labels and present it to the class.

Place this research task in your portfolio under the section: Investigate.

Assessment: RESEARCH

Activity 2: Investigating rigidity

Investigate whether the following shapes are rigid or non-rigid.

Use the following as a guide in your investigation.

Use sticky tape and strips of cardboard to make the shapes shown above.
Use a small amount of force to check whether the shape is rigid or not.
Make the non-rigid shape rigid with extra strip/s of cardboard.
Record your results on the table below:

Draw on shape how each shape was made

What can you deduce from this investigation?
Find pictures or draw sketches that demonstrate this type of strengthening in the real world.
Paste it on an A4 page and put it together with the above activity under INVESTIGATE.

===Activity 3: Practical task=== - Group work (4 learners per group)

Collect the following materials at home or at school.

Cardboard
Egg containers
Straws
Corks
Plastic bottles, lids, plastic containers
Nails
Polystyrene
Glue
String
Wood
Wool
Skewers
Wire
Sucker Ə

Design and make any article using at least 3 of the above materials and include at least 3 structural elements in the one design.

Identify a problem, need or opportunity and write a brief
State 2 specifications for the product.
State the tools and materials list
Evaluate the product against the specifications and whether the structure is stable/ rigid when a force is applied to it.
Suggest one improvement to the product.
You must also comment on the impact of your product on the environment.

^[1]The use of Technology

People now use technology, but why. People would have fast and easy technical things like:•Mobile cellphone

•Microwave

And other technical things.In grade 8 we learn that frame structures have many sides.

↑ Lu, Yanning; Xiang, Yanzheng; Chen, Bo; Zhu, Haiyang; Yue, Junfeng; Jin, Yawei; He, Pengfei; Zhao, Yibo; Zhu, Yingjie; Si, Jiasheng; Zhou, Deyu (2022-10-27). "Steam turbine power prediction based on encode-decoder framework guided by the condenser vacuum degree". PLOS ONE. 17 (10): e0275998. doi:10.1371/journal.pone.0275998. ISSN 1932-6203.

[1] Lu, Yanning; Xiang, Yanzheng; Chen, Bo; Zhu, Haiyang; Yue, Junfeng; Jin, Yawei; He, Pengfei; Zhao, Yibo; Zhu, Yingjie; Si, Jiasheng; Zhou, Deyu (2022-10-27). "Steam turbine power prediction based on encode-decoder framework guided by the condenser vacuum degree". PLOS ONE. 17 (10): e0275998. doi:10.1371/journal.pone.0275998. ISSN 1932-6203.

[1]