1. Natural Sciences and Technology Grade 5
Term 1: Life and Living
Skeletons as Structures
(PPT 2)

2. Topic 3 Skeletons as Structures
Frame and shell structures
Gr 5 Natural Sciences and Technology – Term 1, Topic 3

3. What is a shell structure?
it holds and protects the things that are inside the structure.
people build houses to provide shelter.
cars are also designed and built to provide transport.
tins are manufactured to preserve vegetables, soup, fruit, etc.
Gr 5 Natural Sciences and Technology – Term 1, Topic 3

4. What is a shell structure?
it is made to resists heavy loads.
Examples:
crab- and crayfish shells
exoskeletons of invertebrates
eggshells
Gr 5 Natural Sciences and Technology – Term 1, Topic 3

5. Shell structures
Gr 5 Natural Sciences and Technology – Term 1, Topic 3