Classify an activity by what it does to a product, not by the company that does it. Taking from nature is primary, changing materials into goods is secondary, and serving people or businesses is tertiary.
This lesson opens the topic primary, secondary and tertiary economic activities.
What is the function test?
Ask one question: what does this activity do? Extracting or harvesting from nature gives primary. Changing materials into something new gives secondary. Providing a service gives tertiary.
The company name and the final product do not enter the test. Only the action counts.
Worked example: one company, three sectors
This is a worked example. Sunrise Foods grows rubber trees, turns latex into gloves and runs a shop that sells the gloves.
| Activity | What it does | Sector |
|---|---|---|
| Tapping latex from trees | Takes a product from nature | Primary |
| Making gloves in a factory | Turns latex into a new product | Secondary |
| Selling gloves at the shop | Serves customers | Tertiary |
| Driving the delivery van | Moves goods as a service | Tertiary |
One company, three sectors. A question that asks for the sector of “Sunrise Foods” is unclear, so look for the activity it actually names.
The mistake that loses marks
A student sees “Sunrise Foods” and thinks “food company, so primary”. Or sees “gloves” and thinks “product, so secondary” for all four rows.
| Row | Wrong label | Reason given | Right label |
|---|---|---|---|
| Tapping latex | Secondary | “It is a factory product” | Primary |
| Driving the van | Secondary | “It belongs to the glove company” | Tertiary |
The wrong reasons use the company, not the action. The fix is to write the action in a few words before choosing the sector.
How do I handle a borderline case?
Some activities sit near a boundary. A fish farm grows fish in tanks: is that primary? It produces a raw product from living things, so it is classed as primary.
If you are unsure, state your rule and apply it: “Fish farming takes a living product and sells it raw, so it is primary.” A marker gives credit for a clear, consistent reason. You can rehearse borderline cases with the graph evidence and fair-comparison lab.
Check yourself
Classify each activity and give the action in a few words: (a) catching prawns at sea, (b) peeling and freezing prawns in a plant, (c) a restaurant serving prawn noodles, (d) repairing the fishing boat.
Answer
(a) Primary: takes a product from nature. (b) Secondary: changes raw prawns into a frozen product. (c) Tertiary: serves food to customers. (d) Tertiary: a repair service.
All four may link to one seafood business, but the function test gives three sectors.
What to study next
Next, follow a product along a chain in tracing value added through a supplied production chain. Then test yourself with the topic practice set.
For a teacher to check your reasoning on new examples, see online one-to-one Geography tuition.