Health: The Ultimate Treasure
Class 8 · Science
4 ideas in Class 8 Science, explained in plain words, with games and quizzes to practise.
Well-Being and Healthy Habits
Part of: Health and Habits
Health includes the body, mind and relationships with others. Balanced food, activity, sleep, cleanliness and time with supportive people all contribute.
Why it matters. Daily routines and surroundings can affect how people feel and function.
Try it in two minutes
- Name one habit that supports the body.
- Name one that supports the mind or relationships.
- Choose a small healthy routine to practise.
Try at home. Make a simple plan for active time, rest and time with family.
Diseases, Signs and Symptoms
Part of: Disease Types
A disease affects normal body or mind function. A symptom is felt by a person; a sign can be seen or measured. Communicable disease can spread through pathogens, while non-communicable disease does not pass person to person.
Why it matters. These distinctions help explain how a condition is noticed and whether it can spread.
Try it in two minutes
- Ask whether the person feels it or it can be measured.
- Check whether a pathogen causes it.
- Sort spreadable and non-spreadable conditions.
Try at home. Sort examples into felt symptoms and observable signs.
How Communicable Diseases Spread
Part of: Transmission and Prevention
Pathogens can spread through air, contact, contaminated food or water, and vectors such as mosquitoes or houseflies. Hygiene and route-specific precautions can reduce transmission.
Why it matters. Knowing a route helps people choose a useful prevention step.
Try it in two minutes
- Identify the route named.
- Choose a precaution that interrupts it.
- Avoid sharing items when contact can spread infection.
Try at home. Match common prevention steps to air, contact or water routes.
Immunity, Vaccines and Medicines
Part of: Immune Protection
The immune system helps fight disease. Vaccines train it to recognise a pathogen. Antibiotics target bacteria and do not work against viruses.
Why it matters. Understanding prevention and medicine helps avoid confusing vaccines with treatments or antibiotics with antiviral medicines.
Try it in two minutes
- Tell prevention from treatment.
- Identify whether bacteria or viruses are involved.
- Use antibiotics only under medical guidance.
Try at home. Ask a health professional why a vaccine and an antibiotic have different roles.
What your child will practise
- Diseases, Signs and Symptoms: Lab Explorer Sort (Sort It Out)
- Diseases, Signs and Symptoms: Space Quick Fire (Quick Fire)
- How Communicable Diseases Spread: Ocean Quick Fire (Quick Fire)
- Immunity, Vaccines and Medicines: Space Puzzle (Clue Puzzle)
- Well-Being and Healthy Habits: Explorer'S Map Quest (Match It Up)
- Quiz: Diseases, Signs and Symptoms (8 questions)
- Quiz: How Communicable Diseases Spread (8 questions)
- Quiz: Immunity, Vaccines and Medicines (8 questions)
- Quiz: Well-Being and Healthy Habits (8 questions)