CBSE Class 11 Home Science
Chapters: 5
1. Introduction to Home Science
What is home science
- What Is Home Science? – Home science is the study of daily living. It uses science and art to make life at home, in the family and in the community healthy and happy. It has five fields: Food and Nutrition, Human Development (and family studies), Fabric and Apparel, Resource Management, and Communication and Extension. Home science is useful for everyone, boys and girls, because everyone eats, dresses, spends money and lives with others. It also leads to many careers, from dietitian to fashion designer to event planner.
2. Understanding Oneself: Adolescence
Understanding the self · Food, nutrition, health and fitness · Management of resources · Fabric around us · Media and communication technology
- Stages of Human Development: From Before Birth to Old Age – The prenatal stage runs from conception to birth in three periods: germinal (first two weeks), embryonic (2–8 weeks) and fetal (9 weeks to birth); harmful agents called teratogens (alcohol, smoking, drugs, infections like rubella) and the mother's nutrition and stress affect the baby. Infancy (0–2 years) begins with reflexes, then motor milestones, attachment and object permanence (Piaget's sensorimotor stage). In early childhood (2–6) children use symbols and pretend play but think egocentrically and fail conservation (pre-operational); in middle childhood (6–11) they think logically about concrete things. Adolescence brings puberty, abstract thinking, the search for identity and challenges such as peer pressure, delinquency, substance use and eating disorders. Adulthood brings career, marriage and parenthood; old age brings retirement, loss and wisdom.
- 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.
- Resource Management: Making the Most of What We Have – A resource is anything used to reach a goal. Human resources are inside people (time, energy, knowledge, skills, attitude); non-human resources are things (money, materials, space, tools). Resources can be individual or shared, natural or community. They are limited, useful, can replace one another and must be managed. Management is a process: plan, organise, implement, control and evaluate. Time, money and energy are the resources families manage most, using time plans, budgets and work-saving methods.
- Textile Fibres: Natural, Synthetic, Properties and Yarns – A textile fibre is a fine, flexible strand that is much longer than it is wide. Fibres are spun into yarns, and yarns are woven or knitted into fabrics. Natural fibres come from plants (cotton, linen – made of cellulose) or animals (wool, silk – made of protein). Manufactured fibres are either regenerated (viscose rayon, lyocell, made from wood cellulose) or synthetic (nylon, polyester, acrylic, made from petrochemical polymers). Each fibre's shape and chemistry give it properties: cotton absorbs water and is cool; wool is warm, springy and absorbs moisture; silk is smooth and lustrous; polyester and nylon are strong, crease-resistant and quick-drying but absorb little. Spinning twists fibres into yarn; blends such as polycotton combine good points of two fibres. Simple tests (burn test, microscope, water drop) help identify fibres.
- Mass Media – Mass media are channels that carry the same message from one sender to a very large audience: print (newspapers, magazines), broadcast (radio, TV, film) and digital (websites, social media, music videos, video games). They inform, educate, entertain and persuade. Owners, editors and algorithms act as gatekeepers that choose which news we see. New media is digital, interactive and two-way, so audiences can reply and create. Sociologists debate how strongly media affect audiences, from direct 'injection' to active audiences who choose and interpret.
3. Understanding Family, Community and Society
Nutrition, health and hygiene · Resource availability and management
- Hygiene and Sanitation – Health means feeling well in body, mind and social life, not just having no disease. We can see health in signs (indicators) like weight for age, energy, sleep and how often we fall ill. Poor food causes malnutrition: under-nutrition (too little food or nutrients) or over-nutrition (too much, leading to obesity). Hygiene means clean habits that stop germs: personal hygiene (body, hands, teeth, clothes), food hygiene (clean, covered, well-cooked food) and environmental hygiene (clean surroundings, covered bins, no still water, toilets). Sanitation means safe disposal of waste and sewage. Drinking water must be made safe by boiling, filtering, chlorine or other methods.
- Time Management and Space Planning – A resource is anything we use to reach a goal. Time, energy and space are resources: time is equal for all (24 hours a day) but cannot be stored or brought back. Time management means planning and using time well: list tasks, set priorities, make a time plan, follow it and check it. A peak load period is a time when many tasks pile up together, like the morning rush; it is eased by doing some work in advance, sharing work and using tools. The work curve shows that energy and output fall the longer we work without a break, and rise again after rest. Work simplification means doing a task with less time and energy. Space planning arranges a home so it is easy, safe and pleasant to use.
4. Childhood
Nutrition, health and well-being · Our apparel
- Nutrition for Infants and Children – Children grow fast, so they need more nutrients for their body size than adults. Infants (0–1 year) should get only breast milk for the first 6 months; at 6 months soft, mashed complementary foods are added while breastfeeding continues. Vaccines (immunisation) protect children from serious diseases. Pre-schoolers (1–6 years) have small stomachs, so they need 3 meals and 2 snacks a day, with low-cost nutritious snacks like roasted chana, fruit or sprouts. School-age children (6–12 years) need a balanced diet, a good breakfast, a healthy tiffin and water; common problems are skipping breakfast, junk food, anaemia, worms, tooth decay and obesity. Children with special needs (illness, disability) need food planned around their condition.
- Selection of Clothing – Clothes do several jobs: they protect the body (from sun, cold, rain, injury and dirt), keep us modest, show identity (uniforms, culture, status) and decorate us. When we choose clothes, many factors matter: climate and season, occasion, age, occupation, culture and custom, fashion, personality, figure and budget. Children's clothes change by stage: babies need soft, loose cotton with front openings and no small buttons or cords; toddlers need clothes that let them move and that they can put on alone; school children need strong, washable clothes with room to grow. People with special needs (wheelchair users, older people, people with weak hands or sensory issues) need adaptive clothing with velcro, elastic waists, front openings, soft seams and easy-to-reach fastenings.
5. Adulthood
Financial management and planning · Care and maintenance of fabrics
- Family Budget: Household Income, Spending and Saving – A household is a group of people who live together and share income and spending. It has needs (food, housing, clothes, health, education) and wants (things that are nice but not necessary). Its income comes from work (wages, salary), from running a business, from property (rent, interest, dividends) and from transfers (pensions, grants, gifts). A family budget is a plan that lists expected income and spending for a period, usually a month. Spending can be fixed (rent, fees, loan instalments) or variable (food, electricity, travel). If income is more than spending the budget has a surplus, if equal it is balanced, and if less it has a deficit. Because money is limited, every choice has an opportunity cost: the next best thing you give up.
- Fabric Care and Maintenance – Fabric care keeps clothes clean, good-looking and long-lasting. Read the care label first. Repair (mend) small damage early. Remove stains while fresh with the right remover. Wash with soap or detergent using the right method for the fibre. Use blue for whites and starch for crispness. Iron at the right heat, dry clean what water would spoil, and store clothes clean, dry and protected from insects.