Class 4 Evs - ODISHA

How Things are Made

The chapter 'How Things are Made' in the Class 4 EVS book 'Our Wondrous World' introduces students to the fascinating journey of everyday items from raw materials to finished products. Young learners explore how common things like paper, cloth, sugar, and clay pots are crafted through step-by-step processes using natural resources and human effort. This chapter builds environmental awareness and appreciation for artisans and industries. For Odisha BSE board exams, this topic is important for scoring questions related to raw materials, traditional crafts, and sequential steps of making goods, helping students connect textbook learning with their daily surroundings.

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Key Concepts

Raw Materials

Basic natural substances like cotton, wood, and clay that are used to make finished products.

Process of Papermaking

Paper is made from bamboo or wood pulp, which is cleaned, mixed with water, pressed, and dried.

Weaving Cloth

Cotton is first spun into yarn and then woven on a loom to make fabric for our clothes.

Pottery Making

Wet clay is shaped on a potter's wheel, dried, and then baked in a kiln to make strong pots.

Sugar Production

Sugar is made by crushing sugarcane to extract juice, which is then boiled and purified into sugar crystals.

Important Formulas

Raw Material + Processing = Finished Product
Cotton Plant -> Cotton Boll -> Yarn -> Fabric -> Clothes
Bamboo/Wood -> Pulp -> Flattened Sheet -> Paper
Sugarcane -> Juice -> Boiling -> Sugar Crystals
Wet Clay -> Potter's Wheel -> Shaping -> Baking (Kiln) -> Pot

Board Exam Info

In the Odisha (BSE) Class 4 EVS examinations, this chapter usually carries around 4 to 6 marks. Common question types include matching raw materials to finished products, filling in the blanks about steps in making paper or cloth, and short-answer questions explaining how a specific item is made.

Frequently Asked Questions

What is a raw material?

A raw material is the basic natural material used by industries or artisans to manufacture finished goods.

Where does the cotton for our clothes come from?

The cotton for our clothes comes from cotton plants, which grow cotton bolls containing soft fibers.

Why do potters bake clay pots in a kiln?

Potters bake clay pots in a kiln to remove moisture, make the clay hard, and make the pots strong and durable.

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