Class 4 Evs - TAMILNADU
How Things are Made
The chapter 'How Things are Made' in the Class 4 EVS 'Our Wondrous World' textbook introduces students to the fascinating journey of everyday items from raw materials to finished products. Learners explore how common things like paper, cloth, sugar, and clay pots are made using natural resources like plants, animals, and earth. This chapter is very important for Tamil Nadu Samacheer Kalvi board exams as it builds environmental awareness, nurtures curiosity about the world, and frequently appears in tests through matching exercises, fill-in-the-blanks, and short-answer questions about material sources.
Start Learning FreeKey Concepts
Raw Materials
These are the basic natural substances like wood, cotton, and sugarcane that we use to make different things.
Making Paper from Wood
Wood logs are cut into small pieces, mixed with water and chemicals to make pulp, and then flattened and dried to form paper.
Cotton to Cloth
Cotton is picked from plants, spun into yarn, and then woven on a loom to create the fabric we wear.
Clay to Pot
Special soil called clay is mixed with water, shaped on a potter's wheel, and baked in a kiln to make strong pots and toys.
Recycling
Used materials like old paper and plastic can be cleaned and melted down to make new things, which helps protect our planet.
Important Formulas
Board Exam Info
This chapter typically carries around 5 to 8 marks in the Tamil Nadu (Samacheer Kalvi) Class 4 EVS term examinations. Common question types include matching raw materials to finished products (like cotton to shirt, wood to paper), short answers on where we get sugar from, and fill-in-the-blanks.
Frequently Asked Questions
Where does sugar come from?
Sugar is made from the juice of the sugarcane plant, which is crushed in factories and processed into sugar crystals.
Why is it important to recycle paper?
Recycling paper saves trees from being cut down and helps keep our environment clean and green.
What is the difference between a raw material and a finished product?
A raw material is the natural resource we start with (like cotton), while a finished product is the final item we can use (like a shirt).
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