Nature's Treasures
Class 6 · Science
5 ideas in Class 6 Science, explained in plain words, with games and quizzes to practise.
Air and Wind
Part of: Air and water
Air is a mixture of gases. Most of it is nitrogen, about one-fifth is oxygen, and a tiny part is other gases. Our bodies need oxygen all the time, which is why we cannot hold our breath for long. Air that moves is called wind, and it can spin a paper pinwheel or turn the wings of a windmill.
Why it matters. Children breathe all day without thinking about it. Knowing that air is a mixture, and that oxygen is needed constantly, helps them understand why clean air matters and how wind can be used as a source of energy.
Try it in two minutes
- Ask your child to take a deep breath and hold it for a few seconds, then breathe out. Ask: how did your body feel?
- Explain that the body needs oxygen from the air again and again, not just once in a while.
- Hold a paper strip in front of a fan or in a breeze. Ask: what makes it move even though we cannot see air?
- Ask your child to guess how a big windmill might use the same moving air.
Try at home. Make a simple paper pinwheel and test it indoors, outdoors and in front of a fan. Ask in which place it spins fastest and why.
Water: Uses, Saving and Pollution
Part of: Air and water
Most of Earth's water is in oceans and seas, but it is salty and cannot be used for drinking or farming. Freshwater is found in ice, rivers, lakes and underground, and only a small part is easy to reach. This is why saving water, stopping leaks, harvesting rainwater and keeping water clean are so important.
Why it matters. Children often feel water is endless because it comes out of a tap. Understanding that usable water is limited helps them build daily habits that protect it for everyone.
Try it in two minutes
- Fill a large bowl to stand for all the water on Earth. Ask your child to guess how much of it is salty.
- Take out just one spoon to show the small share that is easy to reach and fresh.
- Ask: when do we use more water than we need at home?
- Together, list two ways to save water this week.
Try at home. Place a bucket under a dripping tap or a slowly running tap for ten minutes and let your child see how much water collects.
Energy from the Sun and Forests
Part of: Sun, forests and the land
The Sun gives heat and light. Plants use sunlight to make food, animals eat plants, and so the energy in our food began with the Sun. Forests give food and shelter to many living things and hold the soil in place, but a lost forest takes many years to grow back.
Why it matters. Children usually see the Sun as just a bright light. Linking sunshine to the food on their plate shows how every living thing is connected, and why cutting forests has real consequences.
Try it in two minutes
- Point to a meal and ask: where did the rice, the milk or the vegetable come from?
- Follow each item back to a plant, then ask what the plant needed to grow.
- Name some uses of the Sun's heat and light, like drying clothes or lighting a room.
- Ask: what would happen to animals if a forest was cleared?
Try at home. Put two similar potted seedlings, one in sunlight and one in a dark cupboard, and watch for a week. Ask your child to explain the difference.
Soil, Rocks, Minerals and Fossil Fuels
Part of: Sun, forests and the land
Soil forms when rocks break into tiny pieces over thousands of years, helped by the Sun, water and living things. Rocks are made of minerals, and metals such as copper and iron are taken out of minerals. Coal, petroleum and natural gas are fossil fuels. They formed over millions of years from the remains of tiny living things and plants buried deep in the earth.
Why it matters. These materials feel ordinary, so children seldom ask where they come from. Knowing they take thousands to millions of years to form shows why they must be used carefully, and why burning fuels affects the air.
Try it in two minutes
- Rub two soft stones together or crush a small clod of dry soil. Ask: how might rocks turn into soil over time?
- Look at a few household things made from metal. Ask: where might the metal have come from?
- Ask your child to name the fuels used in your area, for example petrol, diesel or cooking gas.
- Talk about one way your family could use less fuel.
Try at home. Collect soil from two different places, such as a garden and a roadside. Compare their colour and feel, then wash your hands well.
Renewable and Non-renewable Resources
Part of: Types of natural resources
Things we get from nature, such as air, water, soil and coal, are natural resources. Things people make, such as a bicycle or a bulb, are human-made resources. Renewable resources, like air, water and forests, are renewed by nature in a reasonable time. Non-renewable resources, like coal, petroleum, natural gas, minerals, rocks and soil, take so long to form that once used they are gone for practical purposes.
Why it matters. Sorting resources this way helps children understand why some things can be used freely with care, while others must be saved. It builds the habit of thinking about the future.
Try it in two minutes
- Walk around a room and ask your child to point to five objects and say if each one is natural or human-made.
- For each natural resource, ask: does nature give it back in a short time, or does it take millions of years?
- Sort the resources into two piles on paper: renewable and non-renewable.
- Ask: which pile do you think we should use more carefully, and why?
Try at home. Ask your child to choose one resource from the non-renewable pile and think of two ways your family can use less of it.
What your child will practise
- Air and Wind: Jungle Quick Fire (Quick Fire)
- Energy from the Sun and Forests: Space Quest (Collect the Answer)
- Renewable and Non-renewable Resources: Eco Sort (Sort It Out)
- Soil, Rocks, Minerals and Fossil Fuels: Candy Puzzle (Clue Puzzle)
- Water: Uses, Saving and Pollution: Ocean Quick Fire (Quick Fire)
- Quiz: Air and Wind (8 questions)
- Quiz: Energy from the Sun and Forests (8 questions)
- Quiz: Renewable and Non-renewable Resources (8 questions)
- Quiz: Soil, Rocks, Minerals and Fossil Fuels (8 questions)