HKDSE Economics | Economic Growth and Development: Teacher Prep Guide

HKDSE Economics | Economic Growth and Development: Teacher Prep Guide | Measurement, Causes, Costs

2026-11-02

Tutor lesson-prep guides · Secondary Economics

Nominal GDP rises from 200 trillion to 210 trillion, a headline gain of 5.0%. With inflation at 3% and population up 1%, real growth per head is only 3.96%. This lesson teaches the three numbers separately.

Objectives — Students can: (1) convert nominal growth into real growth with a price index, here 5.0% becoming 1.94%; (2) separate growth in output from development in living standards, distribution and environment; (3) name at least three costs of growth with one local example each.

01 Prerequisites (3-minute check)

If any of these fails, fix it before the lesson starts.

Skill	Quick check	Pass mark
GDP definition	Final goods only	Intermediate goods excluded
Nominal versus real	Current prices versus constant prices	Real strips out price changes
Percentage change	New minus old over old	Multiply by one hundred

02 Lesson flow (60 minutes)

Time	Stage	Tutor does	Student does
0-8 min	Number warm-up	Three GDP figures, which is largest	They say it cannot be compared
8-20 min	Nominal to real	Divide by the price index	5.0% becomes 1.94%
20-32 min	Per head	Divide by population	Steps shown
32-44 min	Growth versus development	Sort four indicators	Sorting correct
44-54 min	Costs and policy	One example per cost	At least three
54-60 min	Exit check	Three quick questions	All three correct

03 Teaching script (read it out)

Scene 1: Nominal growth is an illusion; real growth is what is marked

Nominal GDP moves from 200 to 210 trillion, a gain of 5.00%.
With inflation of 3%, real growth equals (1+0.0500) divided by (1+0.03) minus one, which is 1.94%.
So GDP rising by 5% is not the economy improving by 5%.
Model sentence: real growth was 1.94% because higher prices absorbed part of the nominal rise.

Ask the student: why must two years be compared in real terms?

Scene 2: Per head is the living standard measure

210 trillion divided by 7.5 million people gives about 280000 dollars each.
Population grew 1%, so real growth per head was 3.96%, below the aggregate 1.94%.
Rule: living standards are always discussed per head, never as a total.

Ask the student: how can total output rise while output per head falls?

Scene 3: Growth is not development

Growth measures output; development adds education, health, life expectancy, income distribution and environmental quality.
A place can grow every year while air quality worsens and inequality widens, so development may stall.
Answer frame: give the growth number, then three non-income indicators, then a judgement.

Ask the student: give one example of growth without development.

04 Question types and worked steps

Type	Example	Steps	Answer
Calculation	Real growth rate	Nominal growth divided by the price index, minus one	1.94%
Calculation	GDP per head	Divide total by population, keep units	280000 dollars
Explanation	Growth and development	Income and non-income indicators	Two of each
Evaluation	Costs of growth	Environment, distribution, resources	One example each

Sanity check (teach this): Check three ways: real growth multiplied by the price index must recover nominal growth; per head multiplied by population must equal the total; every percentage carries a sign and a percent sign, every figure a unit.

05 Independent practice (3 questions)

Question	Answer	What to watch
Nominal growth 5.0%, inflation 3%, find real growth	Write the formula first	1.94%
Find GDP per head and its real growth	Watch the population change	3.96%
List three costs of growth	One local example each	All three named
Classify four indicators as growth or development	Explain each choice	All four correct

06 Common mistakes and what to say

Mistake	Student writes	Say this
Comparing nominal GDP across years	Price changes ignored, conclusion wrong	“Inflation has not been removed, so no comparison.”
Mixing units, billions and trillions	Answer out by a factor of a hundred	“Convert units before calculating.”
Treating growth as development	Evaluation too shallow	“Development also covers health, education, distribution.”
Listing benefits only	One-sided evaluation loses marks	“Every benefit needs a cost.”

07 Homework (paper, section and question numbers)

Two real growth calculations — Practice paper questions 1 and 2
One GDP per head calculation — Practice paper question 3
One short evaluation of growth versus development — Practice paper question 4

08 Exit check (last 5 minutes)

Question	Answer	Decision
How is real growth obtained from nominal growth?	Divide by the price index and subtract one	Not by simple subtraction
Why is GDP per head preferred?	Population change is removed	It reflects living standards
Name three aspects of development	Education, health, income distribution	Environment also counts

09 Tutor FAQ

Students keep forgetting to subtract one, what fixes it?

Insist on the formula line first, numbers second, units last.

How many examples do they need?

One local example per cost; accuracy of the category matters more.

How long should an evaluation answer be?

Three paragraphs: data, analysis, judgement.

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A TutorZone lesson-prep guide. Written by the TutorZone team; questions and lesson flow are original and are not taken from any school or publisher material.