4th Class

Addition LEARNING OBJECTIVES This lesson will help you to:—

• be able to find the sum of two numbers.
• be able to solve real life problems based on addition.
• explore various facts of addition.
• be able to define addition.
• be able to define the terminology of addition.
• be able to explain the properties of addition.

  Real Life Example Addition is used in every sphere of our life. It is used in our daily activities like purchasing grocery, all monetary transactions like in banks etc.   QUICK CONCEPT REVIEW WHAT IS ADDITION? Combining two or more objects of same kind is known as addition. It is bringing two or more numbers (or things) together to make a new total. Addition is finding the total, or sum, by combining two or more numbers. Some other names used in addition are Sum, Plus, Increase & Total.   TERMINOLOGY Sum The result more...

LEARNING OBJECTIVES This lesson will help you to:—

• be able to find the difference between two numbers.
• be able to solve real life problems based on subtraction.
• explore various facts of subtraction.
• be able to define subtraction.
• be able to define the terminology of subtraction.
• be able to explain the properties of subtraction.

  Real Life Example Subtraction is used in every sphere of our life. It is used in our daily activities like purchasing grocery, all monetary transactions like banks etc. More on top????? No need to stop. More on the floor????? Go next door, get ten more. Numbers the same????? Zero’s the game.   QUICK CONCEPT REVIEW   WHAT IS SUBTRACTION? Subtraction is taking away some objects from a given collection. It is taking one number away from another. Some other names used in subtraction are Minus, Less, Difference, Decrease, Take Away, Deduct.   TERMINOLOGY Difference more...

LEARNING OBJECTIVES This lesson will help you to:-

• be able to find the product of two numbers.
• explore various facts of multiplication.
• be able to define the terminology of multiplication.
• be able to explain the properties of multiplication.

  Real Life Examples Multiplication is used in daily household activities. For example, if 2 glasses of water is required to cook 1 glass of rice. Then how many glasses of water are required to cook 5 glasses of rice. 72 people can sit in one train compartment. How many people are there on a train with 15 such compartments? QUICK CONCEPT REVIEW MULTIPLICATION A hen laid 28 eggs & the chicks were born. She wants to distribute sweets to her friends & relatives. They have 20 families of friends & relatives.   She wants to give 6 sweets to each more...

LEARNING OBJECTIVES This lesson -will help you to:

• learn and study about the renewable and non-renewable sources of energy.
• understand the advantages of reusing and recycling.
• learn about the concept of conservation of energy.
• study about global warming and factors behind it.

  Real Life Examples

• Nowadays we can see that people are installing solar panels on their terrace that convert the solar energy into the electrical energy.
• Solar cells and solar batteries are also used a lot nowadays.
• Since past many years, stress is being given on planting more and more trees. This activity is also promoted in schools. Growing trees is a step towards the green revolution wherein we are working towards minimizing the effects of global warming and more...

LEARNING OBJECTIVES This lesson will help you to:

• understand various internal body parts.
• know about the function of teeth.
• learn about food and digestion.
• study the importance of sanitation and diseases.

  QUICK CONCEPT REVIEW Some of the important body systems which include the vital organs are: 1. Circulatory system: All parts of our body need oxygen and nutrients. This work is done by our blood. The blood is circulated throughout the body. The organ which circulates the blood is our Heart. It pumps the blood. The blood flows through blood vessels. Heart and blood vessels together form circulatory system. Blood vessels are of three types: artery, vein and capillary. Our heart is protected from injuries by our ribs. The ribs form a cage like structure more...

LEARINING OBJECTIVES This lesson will help you to:

• learn about the solar system.
• study about different planets and their moons.
• learn about stars.
• learn about asteroids.
• learn about the movement of planets in the

  Real Life Example

• In the night if we see the sky closely, we can see several shooting stars. These shooting stars are actually meteors that are burning

  QUICK CONCEPT REVIEW UNIVERSE Solar System: The sun, its planets and all the objects moving around them collectively are called solar system. The solar system is in a galaxy known as "the milky way". About 99.86 percent of the mass of the solar system is made up of the sun. There are 8 planets in more...

 LEARNING OBJECTIVES This lesson will help you to:

• study about the use of animals for transport.
• study various modes of transportation.
• learn and familiarize with different currency notes and coins used across the world.
• study and learn different land forms, languages, clothing, food habits, and some idea of another country.

  Real Life Examples

• Whenever we have to go in a train, we have to buy tickets well in have to buy tickets well in advance and have to board the train from the station mentioned in the ticket.
• We can see lot of people and things in the railway station like-coolies, people selling different items, food stalls, book stalls, washer men etc.

  Historical preview

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LEARINING OBJECTIVES This lesson will help you to:—

• study about how houses have changed over time.
• study about differences in rural and urban houses.
• study about waste accumulated in houses.
• learn about urban and rural waste.
• study about methods of reusing and reducing waste.
• study about diversity in animal habitat and shelters.
• study and learn about the nesting habits of different birds.
• learn about the concept of giving direction with respect to any landmark.

  Real Life Examples

• In slum areas we still see people living in miserable conditions and in houses that are made up of mud, hay stack and tin roofs.
• On highways we usually see large sign boards with arrows and directions more...

LEARINING OBJECTIVES This lesson will help you to:

• learn about different games played at home and school.
• Understand the importance of play.
• Study about different occupations in local region country.
• study the relation between gender and work.
• study about different ways of recreation.

  Amazing Facts There are currently 17 countries with women’s as heads of government, heads of state, or both this, according to the UN, is more than double what it was in 2005. Mary Queen of Scots has been attributed to creating the world’s first golf course.   Real Life Example We of then see that in hospitals there are more females as nurses, which shows that nursing is a female dominated job. more...

LEARNING OBJECTIVES This lesson will help you to:—

• learn about matter.
• study different states of matter.
• know how one state changes into another state.

  Real Life Examples When a container containing ice cubes is placed in sunlight it can be observed that first it melts down to form liquid water. And then if it is left undisturbed in sunlight till evening. Some of the water gets evaporated. In the atmosphere and the quantity of water in the container gets reduced. Due to the increasing temperature of the earth, glaciers are melting, leading to the increase in the water level of the earth.   QUICK CONCEPT REVIEW What is Matter?

• Matter is something that has mass and more...