Rice Consumption Calculations — Global Perspectives
He Tatau Arumanga Hāpuku · Exploring global food statistics through mathematics · Years 7–10
Ngā Whāinga Akoranga · Learning Intentions
- Calculate and compare per-capita rice consumption across different countries and regions.
- Represent data using appropriate graphs and tables.
- Identify patterns in rice consumption linked to geography, culture, and income.
- Connect statistical findings to global food security debates.
Paearu Angitu · Success Criteria
- Calculations are accurate and show working.
- Data is represented in at least two different graphical forms.
- Patterns identified include at least one cultural/geographic AND one economic explanation.
- Students connect their findings to the concept of food scarcity from Unit 10 Week 1.
Tūāhua Raraunga · Data Table — Rice Consumption by Country
Study the table below. All figures show kilograms of rice consumed per person per year.
| Country | Region | Income Level | kg/person/year |
|---|---|---|---|
| Bangladesh | South Asia | Lower-middle | 172 |
| Vietnam | Southeast Asia | Lower-middle | 168 |
| Indonesia | Southeast Asia | Lower-middle | 154 |
| Japan | East Asia | High | 53 |
| China | East Asia | Upper-middle | 97 |
| India | South Asia | Lower-middle | 80 |
| Nigeria | West Africa | Lower-middle | 32 |
| Brazil | South America | Upper-middle | 40 |
| United States | North America | High | 12 |
| New Zealand | Pacific | High | 14 |
Ngā Mahi Tatau · Calculation Tasks
Show all working in the spaces below.
Task 1: Find the difference between the highest and lowest per-capita consumption in the table.
Task 2: Bangladesh has a population of approximately 170 million people. How many tonnes of rice would be consumed in Bangladesh in one year? (Show your working. 1 tonne = 1,000 kg)
Task 3: Japan consumes 53 kg per person per year. New Zealand consumes 14 kg. What percentage of Japan's per-capita consumption does New Zealand's represent? (Round to 1 decimal place.)
Task 4: Calculate the mean (average) per-capita consumption for all 10 countries. Show your working.
He Kauwhata · Graphing Your Data
You must create two different types of graphs from the data above.
Graph 1 — Bar Graph: Draw a bar graph showing kg/person/year for all 10 countries. Label axes and include a title.
Graph 2 — Your choice (circle one): Pie chart / Dot plot / Stem-and-leaf plot / Other: _______
Pātai Tātari · Analysis Questions
Answer in full sentences. Use evidence from the data table.
1. What geographic or cultural pattern do you notice in the data? Explain why you think this pattern exists.
2. Is there a relationship between income level and rice consumption? Describe what you see in the data and explain why this might be.
3. Japan is a high-income country but consumes much more rice than the United States, which is also high-income. What does this tell us about using income level alone to explain consumption patterns?
4. If a country has very low rice consumption but high food prices, what might that suggest about food security for people in that country?
Hononga Marautanga · Curriculum Alignment
Statistics: collect, display, and interpret data using appropriate representations. Number: calculate with decimals and percentages including ratios.
Economic Understanding: understand how food distribution reflects global economic patterns, and how data can reveal inequalities in access to resources.
Tuhia ōu whakaaro · Write Your Thoughts
Looking at the data as a whole: if you were advising a global organisation working on food security, what would the data tell you about where to focus attention and why?
Aronga Mātauranga Māori
In Māori communities, tracking kai — what is produced, what is shared, what is stored — was a sophisticated form of resource management long before the concept of "statistics" arrived. The rua kūmara was not just a storehouse: it was a data system tracking what the community had produced and what it owed to its obligations of manaakitanga. Today, global rice statistics tell us something similar: who has enough, who does not, and why the gap between them reflects not just agricultural productivity but political and economic relationships that can be changed. Understanding these numbers is the first step toward the kind of kaitiakitanga that operates at a global scale.
Ngā Rauemi Tautoko · Resources already provided
- unit-10-week3-rice-mapping.html — maps the geographic origins of rice production and connects to this data
- unit-10-week1-food-budget-pie-chart.html — earlier food budget work connects to scarcity concepts explored here
- unit-10-week3-trading-game.html — simulation of how food trade operates under scarcity conditions
- unit-10-week1-scarcity-vocabulary-sort.html — key vocabulary for food security and scarcity discussions
📋 Teacher Planning Snapshot
Ngā Whāinga Ako — Learning Intentions
Students will engage with this resource to investigate the intersection of kai (food), culture, and climate — exploring how mātauranga Māori approaches to food production, preservation, and distribution offer powerful responses to contemporary food security and climate challenges in Aotearoa New Zealand and globally.
Ngā Paearu Angitū — Success Criteria
- ✅ Students can explain how traditional Māori kai practices (maramataka, kūmara cultivation, rāhui) embody ecological knowledge and food security principles.
- ✅ Students can connect kai culture and climate scarcity to contemporary community action and food sovereignty movements.
Differentiation & Inclusion
Scaffold support: Provide graphic organisers that map traditional kai practices to modern food security concepts at the entry level. Offer extension tasks asking students to research a specific iwi's traditional food system and evaluate its contemporary relevance, or to investigate a local food sovereignty initiative.
ELL / ESOL: Pre-teach domain vocabulary (food sovereignty, food security, kaitiakitanga, rāhui, maramataka) using visual diagrams and real-world examples. Draw connections to students' own cultural food traditions — these are valid entry points into the unit's themes. Allow oral or visual presentation of learning as alternatives to written tasks.
Inclusion: Kai is a universal human experience — all students have a relationship with food, seasonality, and sharing. Neurodiverse learners benefit from concrete, hands-on engagement with these concepts (e.g., examining a kūmara, mapping seasonal foods). Acknowledge diverse economic circumstances sensitively when discussing food security. Choice in how students demonstrate understanding (written, visual, oral) supports inclusive assessment.
Mātauranga Māori lens: The maramataka — the Māori lunar calendar — is one of Aotearoa's most sophisticated environmental data systems, encoding centuries of ecological observation about planting, harvesting, fishing, and weather patterns. Kūmara cultivation in pre-colonial Aotearoa was a feat of agricultural knowledge adapted to a new climate. Rāhui (temporary resource restrictions) is indigenous resource management — conservation before conservation. Kaitiakitanga frames the relationship between people and kai not as extraction but as reciprocal guardianship. These are not historical curiosities — they are living solutions to contemporary problems.
Prior knowledge: Students benefit from foundational understanding of climate change and food systems. No specialist mātauranga Māori knowledge required for entry-level engagement — the unit builds this knowledge progressively.
Curriculum alignment
- Place and Environment — Social Studies: Understand how people's management of resources reflects their values and their view of sustainability — and how mātauranga Māori frameworks provide models for sustainable resource management.
- Ecology — Living World: Understand how human activities and natural factors affect the distribution and abundance of organisms; evaluate the impact of changes on ecosystem health and food systems.