South 고등학교 2학년 Technology and Home Economics
Chapters: 6
1. Living culture and digital environment
Everyday life and values · Cultural sensitivity in living · Future food culture · Future clothing culture · Future housing culture
- Home Economics: Making a Home Work Well – Home economics is about managing a home's resources (space, time, money, energy and skills) so that everyone living there is healthy, safe and happy. It includes planning and sharing home activities, organising a living space by simple design rules, choosing storage, keeping things in repair, knowing when to call a professional, and making a home that is both useful and pleasant.
- Cultural Diversity – Cultural diversity means many groups with different ways of life live together. Ethnocentrism judges others by your own culture; cultural relativism first understands a custom in its own setting. Prejudice and stereotypes block respect. Societies have a mainstream culture, subcultures and countercultures. Universal human rights set the limit: differences deserve respect, harm to people does not.
- Nutrition – Nutrition is how we get and use the substances in food. The body needs six groups of nutrients: carbohydrates and fats (mainly energy), proteins (growth and repair), vitamins and minerals (small amounts to keep the body working), and water, plus fibre for healthy digestion. Carbohydrate and protein give about 17 kJ per gram, fat about 37 kJ per gram. A balanced diet gives all nutrients in the right amounts, and energy in should roughly equal energy out.
- Clothing: Why We Wear It, What It Is Made Of and How to Choose It – Clothes protect us from sun, rain and cold, give modesty, show identity (uniforms, traditional dress such as the sari or hanbok) and let us express ourselves. They are made of fibres: natural ones from plants (cotton, linen) and animals (wool, silk), and synthetic ones from petroleum (polyester, nylon). Fibres are spun into yarn and made into fabric by weaving (over-under) or knitting (loops). Design uses line, colour, shape and texture. A smart buyer plans a wardrobe, checks fit, quality and the care label, compares shops, works out cost per wear, and chooses sustainable options: buy less, mend, swap and recycle.
- Housing: How Homes Meet Our Needs and Change Over Time – Housing is the place where people live. A good home gives shelter, safety, privacy, health and a sense of belonging. Houses are shaped by climate, local materials, culture, money and the way families live. Inside, living space is arranged into private, shared and service zones. A healthy home has fresh air, daylight, low damp and is kept clean and organised. Housing changes as society changes: from traditional houses such as courtyard homes to city apartments and future green, smart and shared homes. Fair access to decent, affordable housing is an important social issue.
2. Consumers and life welfare
Life planning in a low-birth, ageing society · Economic independence · Consumer safety · Welfare services · Resource management over the life cycle
- Life Planning: Designing a Happy, Independent Life – Life planning means thinking ahead about the kind of life you want and how to get there. Life passes through stages (childhood, teenage years, young adulthood, adulthood, older age), each with its own tasks. Along the way come life events, some shared by most people and some chosen. You use five resources: time, money, health, people and skills. A good plan sets short, medium and long-term goals, prepares for risks with savings, insurance and public welfare, and is reviewed as life changes. Being an independent citizen means taking responsibility for yourself and others. In ageing societies with few births, planning for later life matters more than ever. Happiness comes from wellbeing in body, mind, relationships and purpose, not from money alone.
- Smart Ways to Manage Your Finances – Inflation makes prices rise, so the same money buys less. Money kept in a bank earns interest: simple interest is paid only on the original amount, while compound interest also earns interest on earlier interest, so it grows faster over time. A budget plans income into needs, wants and savings. Savings are kept safe; investments can grow but carry risk, and higher possible returns mean higher risk. Insurance shares risk among many people. Income tax is paid on income above a limit, at rates that rise with income.
- Consumer Education: How to Be a Smart Buyer – A consumer is anyone who buys or uses goods and services. Smart buying starts with sorting needs (must have) from wants (nice to have). Rational consumption compares benefit with cost, counts the opportunity cost (what else the money could buy) and stays inside a budget. Sellers use psychology: anchor prices (a big crossed-out price), bandwagon ('everyone has it'), rush (countdowns), 99-endings and celebrity ads; teens are a key target online. Clicking 'I agree' makes a contract, so read terms, auto-renewal, cancel and refund rules. Read labels: price per unit, expiry, ingredients, allergens, nutrition and safety marks. Consumers have rights (safety, information, choice, to be heard, redress, education, basic needs, clean environment) and duties (keep bills, check marks, complain properly, buy sustainably). Together, consumers shape culture: what we buy decides what gets made.
- The Welfare State and Social Security – A welfare state is a state that protects people against the big risks of life: illness, job loss, old age, disability and poverty. It does this with a safety net made of three parts. Social insurance is paid from contributions taken from wages. Social assistance is paid from taxes to people in need. Public services such as schools and hospitals are open to everyone. Countries mix these parts in different ways: liberal (low tax, small help), conservative (help linked to your job) and social-democratic (high tax, help for all). Today welfare states face ageing populations, rising costs, global competition and many informal workers.
3. Growing relationships
Adult love and sexuality · Parenthood · Family communication · Planning later life · Family problems
- Respect, Consent and Gender Equality: Sexual Ethics for Teens – Sexual ethics means treating your own body and other people with respect. Consent must be clear, free, informed and can change at any time. Pressure, fear or power make a "yes" invalid. Everyone has equal rights whatever their gender, and anyone can ask a trusted adult for help.
- Parenting Styles and Parenthood – Parenting is how adults care for, guide and teach a child. Two things matter most: warmth (love and listening) and rules (clear limits). Warm parents with fair rules are called authoritative, and their children usually do best. Becoming a parent changes life, and parents must also look after themselves.
- Family Ethics: Living Well Together as a Family – A family is a group of people who live with, care for and depend on each other. Families come in many shapes: nuclear, joint, single-parent, blended, couples, grandparent-led. Family ethics means the fair and kind ways members treat each other: equal respect, shared work, honest talk, and care for children and elders. A healthy couple relationship rests on free choice, trust and equality. Every family meets problems; good talk, fair sharing and outside help get it through.
- Life Planning: Designing a Happy, Independent Life – Life planning means thinking ahead about the kind of life you want and how to get there. Life passes through stages (childhood, teenage years, young adulthood, adulthood, older age), each with its own tasks. Along the way come life events, some shared by most people and some chosen. You use five resources: time, money, health, people and skills. A good plan sets short, medium and long-term goals, prepares for risks with savings, insurance and public welfare, and is reviewed as life changes. Being an independent citizen means taking responsibility for yourself and others. In ageing societies with few births, planning for later life matters more than ever. Happiness comes from wellbeing in body, mind, relationships and purpose, not from money alone.
4. Foundations of engineering
History and role of engineering · What engineering is · Engineering with STEAM · Engineering problem-solving cases · Engineering careers
- What Is Engineering? – Engineering is using science, maths and creativity to design and build useful things that solve real problems within limits of cost, safety, time and materials. Engineers follow a design process loop: identify the problem, research, generate ideas, build a prototype, test, and improve. From ancient irrigation and roads to today's chips and vaccines, engineering shaped civilisation. Its main branches are civil, mechanical, electrical, chemical, computer and biomedical, and modern problems join many of them together (convergent or STEAM engineering).
- The Design Process: From Problem to Product – The design process is a loop of steps designers use to solve a real problem for real people: investigate the need, define it in a brief and a measurable specification, generate many ideas, build a prototype, then test and evaluate it against the specification. Whatever fails sends you back round the loop. This repeating is called iteration, and it is how almost every product, app, building and artwork is improved.
5. Engineering innovation for the future
Ideas for engineering problems · Digital design and manufacturing · Robots · Green energy · Advanced transport and aerospace
- The Design Process: From Problem to Product – The design process is a loop of steps designers use to solve a real problem for real people: investigate the need, define it in a brief and a measurable specification, generate many ideas, build a prototype, then test and evaluate it against the specification. Whatever fails sends you back round the loop. This repeating is called iteration, and it is how almost every product, app, building and artwork is improved.
- CAD/CAM: Digital Design and Manufacture – CAD (computer-aided design) is drawing and testing a product on a computer as an exact 3D model. CAM (computer-aided manufacture) turns that model into instructions (a toolpath, saved as G-code) that a computer-controlled machine follows to make it. CNC milling and lathes cut material away (subtractive). 3D printers build up layers (additive). Laser cutters cut flat sheets. Using CAD and CAM together makes parts accurate, repeatable and quick to change, and lets designers make fast prototypes (rapid prototyping). The costs are expensive machines, training and less hand skill.
- Robotics: How Robots Sense, Think and Act – A robot is a machine that senses the world, decides what to do with a program, and acts with motors. It has a body (structure), sensors, a controller, actuators, a transmission such as gears, and a power supply. Robots help in factories, hospitals, farms, homes and space.
- Renewable Energy Sources – Non-renewable sources (coal, oil, gas, uranium) are used faster than nature makes them, and fossil fuels release CO₂. Renewable sources are refilled by nature: solar (photovoltaic cells and solar heating), wind (P ∝ v³), hydroelectric (P = η ρ g h Q), tidal, geothermal and biomass. Hydrogen fuel cells turn hydrogen and oxygen into electricity and water. Because sun and wind change, we need storage (batteries, pumped hydro) and a mix of sources. Every source has costs: land, materials, cost and effect on nature.
- Transport Technology: Moving People and Goods – Transport technology moves people and goods from place to place. Every transport system has five parts: a vehicle, a way (road, rail, sea lane, air route), terminals (stations, ports, airports), a power source and a control system. Land vehicles push on the ground using friction. Ships float because water pushes up (buoyancy). Planes fly when lift beats weight and thrust beats drag. Rockets push gas backwards and are pushed forwards. Engines turn fuel or electricity into motion; electric motors waste less energy. Safety depends on stopping distance = thinking distance + braking distance. Future transport aims to be cleaner, safer and smarter: electric and hydrogen vehicles, maglev trains, drones and self-driving cars.
6. Sustainable convergent engineering
Big data, IoT, AI · Hyper-connected society and ICT · Smart cities · Biotechnology and food · Engineering and other knowledge
- Internet of Things (IoT) – The Internet of Things (IoT) is a network of everyday objects that have sensors, a small computer and a network connection, so they can collect data, share it over the internet and act on it. A sensor turns a physical change into data, a microcontroller processes it, the network (Wi-Fi, Bluetooth, Zigbee, 4G/5G, LoRa) carries it to a cloud server or app, and an actuator turns commands into action. IoT is described in three layers: perception, network and application. It brings convenience and saves energy, but needs strong privacy and security.
- Smart Cities – A smart city uses sensors, fast networks and data to run services such as traffic, water, power and waste better. Sensors collect facts, a control hub reads them, and the city reacts. Done well, it saves time, money and energy; done badly, it can invade privacy and leave some people out.
- What Is Engineering? – Engineering is using science, maths and creativity to design and build useful things that solve real problems within limits of cost, safety, time and materials. Engineers follow a design process loop: identify the problem, research, generate ideas, build a prototype, test, and improve. From ancient irrigation and roads to today's chips and vaccines, engineering shaped civilisation. Its main branches are civil, mechanical, electrical, chemical, computer and biomedical, and modern problems join many of them together (convergent or STEAM engineering).