# SAASTE Technology/Modules/Structures Grade 5
## Types of Structures
### GLOSSARY:

* Structure: consists of materials which are joined
together in a specific manner
* Frame structure: made up of individual pieces of material &shy it forms a framework
* Shell structure: protects things from the outside.
* Solid / mass structure: consists mainly of matter.
* Natural structure: exists in nature.
* Constructed structure: is built by people
The environment we live in consists of structures .Structures are made of materials that are suitable for a certain function.
Structures which exist in nature are known as natural structures and those built by people are known as constructed structures.
There are 3 basic types of structures:
* Shell structures: protect something.
* Frame structures: form a frame work.
* Solid / mass structures: consist mostly of matter
Structures either:
* Perform a supportive role (bear loads e.g. pillars, constructed beams, crutches, towers), span gaps (e.g. bridge), protect contents (e.g. helmet, eggshell), contain or hold things (e.g. box), provide stability (foundations) .
Sometimes structures tend to collapse or fail to do their job because of failure of the materials: i.e. wrong material being used for a particular job, or because they have been designed incorrectly, or because they have been manufactured badly.
===Activity 1:=== -(approx.: 1 week (L.O. 2)
Look at the pictures and identify the type of structure it represents.
* Picture
* Ball
* Umbrella
* Mountain
* Bicycle
* Cup
* Flower
===ACTIVITY 2 : Research task=== - (approx. 1week (L.O 1, 3) Collect at least 2 different samples of the following materials.
* Paper
* Plastic
* Cardboard
1. Find out 3 properties of each material- (such as hard/soft, waterproof, strong/weak, etc)
2. Give 2 uses of each material
3. How or what did people in the past who did not have paper to write on do for writing material?
ASSESSMENT: RESEARCH
===ACTIVITY 3: PRACTICAL TASK=== - (approx. 1week (L.O.1) Choose from the list of material supplied and make one of the following of the structures named below. Structures: windmill, hill, box
Materials: plasticine (clay), paper, cardboard, plastic straw. (Additional materials for joining: glue /pin)
ASSESSMENT: PRACTICAL
TEST: Match the word in COLUMN A with the correct sentence in COLUMN B
| COLUMN A | COLUMN B |
| Frame structure | Mainly consists of matter. |
| Constructed structure | Forms a frame work and can have a supportive role |
| Natural structure | Protects things |
| Shell structure | Exists in nature |
| Mass / solid structure | Is made by people |
TOTAL: [5X2] ASSESSSMENT: TEST
===ACTIVITY 3: TECHNOLOGICAL PROCESS=== - approx. 2 weeks (L.O.1)

#### SITUATION

Your school is hosting its annual concert. It is expected of the Gr.5 learners to design and make some of the props for the concert using suitable materials
Use your knowledge and skills that you have gained and design and make the props .The material must be suitable for the particular structure that you will be making.
Investigate: Find out what props are needed. Then say what you will make
(Design brief): I will make a:
Design: Show 2 different designs of the product you have chosen to make.
Choose a final design and your design must include labels.
Material list Name the materials you will use.
Tool List (I will use the following tools.....) Circle the tools and add in others that you will use.
needle scissors saw glue gun cutting board ruler craft knife
Flow diagram: Complete the guided passage on how you are going to make your item.
STEP .1
* First I.........................................
STEP. 2
* Then I................................................
STEP.3
* Afterwards I .........................................................
STEP .4
* Then I................................................
STEP .5
* Finally I.............................................................