ST. XAVIER’S SCHOOLS –CHANDIGARH, PANCHKULA, MOHALI, ZIRAKPUR

Class - 4 English Worksheet-5

USE OF ARTICLES

WHAT ARE ARTICLES?

The words ‘a’, ‘an’ and ‘the’ are called articles.

They define whether something is specific or unspecific. There are two types of articles:

(1) The Definite Article (The) - "The" is called the definite article. It defines its noun as something specific (e.g., something previously mentioned or known, something being identified by the speaker).

This is the lake. (This is a previously specified lake, i.e. one already known to the readers.)

Indefinite articles Definite article

(2) The Indefinite Article (A, An) - "A" and "an" are called the indefinite articles. They define their noun as something unspecific (e.g.something mentioned for the first time).

This is a lake. (This is a previously unspecified lake.)

EXAMPLES:

(a) I fell over the chair again. (b) Can you pass me a chair?

In example (a), the chair is specific. It is known to the audience. However, in example (b), the chair mentioned is unspecific, i.e. it can be any chair.

(c) I loved the apple pie after dinner. (d) I love an apple pie after dinner.

In example (c), the reader is aware of the apple pie being praised. However, in example (d), the speaker is not talking about any specific or particular apple pie.

In this worksheet, we shall be learning about indefinite articles.

USE OF INDEFINITE ARTICLES

The indefinite article ‘a’ is used before singular nouns beginning with a

consonant sound.

Examples:

a) Rohan is a boy. b) Sania is reading a book. c) Her father owns a hotel.

The indefinite article ‘an’ is used before singular nouns beginning with a vowel

sound.

Examples:

a) The farmer bought an ox. b) Kindly, carry an umbrella. c) An apple a day, keeps the doctor away.

POINTS TO REMEMBER

The indefinite article (a, an) is only used for singular nouns. It is not used for plural nouns. For example: a) I saw an animals in the garage. ×

As the indefinite article specifies one thing (e.g., a cup means one cup), it is

NOT USED with non-countable nouns (e.g., water, air, integrity). For example: a) I need an air. × b) Play me a music. × c) Give me a heat.×

Watch the following videos to enhance your understanding of the topic mentioned above and solve the exercise given below.

https://www.youtube.com/watch?v=drTyYqbz6Xk https://www.youtube.com/watch?v=54evC5ZupQg

1. Fill in the blanks with suitable indefinite articles:

a) Newton saw _____ apple fall. b) England is _____ European country. c) Is it _____ useful medicine for fever? d) He hit upon _____ idea. e) I want _____ glass of water. f) It took me _____ hour to reach there. g) He has delivered me _____ wrong letter. h) Rohit has _____ ear for music. i) My father owns _____ hotel. j) Karan’s father is _____ honest police officer.

*****************************************

Class - 4 Hindi Worksheet-5

*****************************************

Class – 4 S.ST Worksheet-3

THE THREE PARALLEL RANGES OF HIMALAYAS

1. The Greater Himalayas (Himadri) 2. The Middle Himalayas (Himachal) 3. The Outer Himalayas (Shiwalik)

LIFE IN THIS REGION

The northern mountains cover the states of Jammu &Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, Darjeeling in West Bengal and some parts of Arunachal Pradesh. Most of the people are engaged in farming, sheep rearing and wood carving.

LET’S DISCUSS THE ABOVE STATES.

Jammu Kashmir - It is famous for its apple orchards and saffron cultivation. Men and women wear long wollen kurta called phiran. People drink special kind of tea called Kahwa.

For more information, kindly click the link given below: - https://youtu.be/1IEcQpCoAlo

Himachal Pradesh- Shimla is the capital of Himachal Pradesh. Men wear

embroidered caps called Kullu caps. Women wear scarves called dhazu.

Uttarakhand: It is famous for basmati rice, lychees and plums. Some people

weave woolen shawls, scarves, and rugs. Nainital and Haridwar attract a large number of tourists.

Sikkim: It is famous for oranges, cardamom and orchids. Some men and women

wear a loose gown, fastened at the waist called bakhu. The main tourist places are Gangtok and Pelling.

Question 1 Fill in the blanks:

a. ______ and ______ are woven products of Uttarakhand. b. A special tea popular in Jammu and Kashmir is called________. c. __________ is dress worn by men and women of Sikkim.

Question 2 Answer the following questions:

a. What is phiran? b. Name any two tourist places of Uttarakhand. c. What is Sikkim famous for?

*****************************************

Project: Can we grow crops on Mount Everest? Give reason for your answers.

Class – 4 Science Worksheet-4 LIFE CYCLE OF ANIMALS

The period of time for which a living thing lives or is expected to live is called a lifespan. Animals need to reproduce so that life on earth goes on. Not only birds, but animals like fish, frogs, reptiles and all insects lay eggs. A frog’s egg develops into a

tadpole. It keeps growing and slowly changes into an adult frog. Some insects like grasshoppers and cockroaches have three stages in their life cycle. The baby insect which comes out of the egg is called a nymph. It is very similar to the parent. The shedding of old skin or shell is called moulting. After moulting many times, it changes into an adult. Other insects like houseflies and butterflies have four stages in their life cycle. The young one that hatches from the egg of these insects is called a larva. It is very different from the parent. It looks more like a worm. The larvae of different insects have different names. The larva of a housefly is called a maggot. The larva of a butterfly is called a caterpillar. The caterpillar eats leaves and grows rapidly. After sometime it stops eating and forms a covering called pupa around itself. Later the pupa bursts open and the butterfly comes out.

For more information, please visit:

https://youtu.be/O1S8WzwLPlM https://youtu.be/F3ElGMVU6SY https://www.studyadda.com/notes/4th-

class/science/animals/reproduction-in-animals/6344

Question 1 Fill in the blanks: a) The shedding of old skin by animals is called_______. b) The period of time for which a living thing lives or is

expected to live is called a _______. c) Animals need to_______ so that life on earth goes on. d) The _______bursts open and the butterfly comes out. e) Insects like houseflies and butterflies have _______

stages in their life cycle. Question 2 Match the following: a) Maggot i) The young one that hatches from the egg b) Caterpillar ii) Frog’s egg develops into c) Tadpole iii) The baby insect that comes out of the egg d) Nymph iv) Larva of a butterfly e) Larva v) Larva of a housefly

Question 3 Refer to the picture given above and label the stages in the picture given below:

*****************************************

Class - 4 Maths Worksheet-5

Watch the videos using the links given below and solve the worksheet: https://youtu.be/2AAhJ0txhvw https://youtu.be/RVYwunbpMHA

Learn the tables 2 to 13 thoroughly.

Question 1 Subtract the following: a) 85445 - 52445 b) 276929 - 186122 c) 66543 – 23728

Question 2 Subtract the following: a) 630 - 489 b) 900 – 746 c) 3000 – 1319

Question 3 Multiply with a 2-digit number: a) 693 x 48 b) 512 x 73 c) 378 x 30

Question 4 Mental Maths: a) 563 + 1 = _____ b) 389 + 0 = _____ c) 604 -1 = _____ d) 875 – 0 = _____ e) 934 x 1 = _____ f) 648 x 0 = _____ g) 12 x 6 = _____ h) 13 x 7 = _____ i) 4 x 5 x 1 = _____ j) 13 x 4 x 0 = _____

*****************************************

Class - 4 Computer Worksheet-4 Topic: Units of Memory / Facts

Whatever we feed into the computer, gets converted into a machine understandable code, called Machine code. A computer can understand only two states – ON (represented by 1) and OFF (represented by 0). These two digits 0 and 1 are called Binary digits or Bits. The data is stored in the computer memory in the form of bits and is measured in Bytes.

Important Links:

https://youtu.be/AkFi90lZmXA (Inside your computer)

Hard Disk was invented by IBM team lead by Reynold B. Johnson.

He is also considered as the father of the Disk Drive.

Types of various Units of Memory:

KB - Kilo Byte MB - Mega Byte GB - Giga Byte TB - Tera Byte PB - Peta Byte EB - Exa Byte ZB - Zetta Byte YB - Yotta Byte

The first Flash drive was manufactured in early 2000 by a company called Trek Technologies.

IBM manufactured their first Flash drive in 2000 by the name of “DiskOnKey”.

CD’s are generally of two types:

CD-R (Compact Disk-Recordable): Data once written cannot be erased, but only read.

CD-RW (Compact Disk- Re Writable): It is a disk erasable CD. Data written on it can be erased and rewritten many times.

Project Work

GUI Operating System – Desktop Management: (Watch and Learn) Note: GUI – Graphical User Interface

Let’s do some exercises based on the topic discussed:

A. Fill in the blanks:

a) Smallest unit of memory is _____. b) Pen drive is a _____. c) _____ is considered as the father of the Disk Drive. d) Full form of YB is _____. e) Manager in a computer is called _____.

B. State True or False:

a) Compact Disk- Re Writable is a disk erasable CD. b) 1 Byte = 1024 bits. c) CD-R stands for Compact Disk-Reusable. d) IBM manufactured their first Flash drive in 1920. e) The first Flash drive was manufactured in early 2000 by a company called

Trek Technologies.

C. Define: a) Machine code. b) Binary digits. c) Operating System. d) Icons. e) Any two features of Windows.

*****************************************

https://youtu.be/FMSmzSly7Pc (Please use the given link)

Learn about: Operating System, Windows Features, Icons, Desktop.

Class – 4 Art Worksheet–2

*****************************************

Class - 4 Punjabi Worksheet-3 (for Mohali & Zirakpur Branches Only)

Do all the below given Book Exercises in the notebook:

*****************************************

ANSWER KEY TO PREVIOUS WORKSHEET

ENGLISH:

A) Fill in the blanks: i) small mangoes ii) golden-yellow iii) protected iv) mangoes v) beautiful mango blossoms

B) Write Yes or No:

i) Yes ii) No iii) Yes iv) Yes v) No

C) Answer the following questions:

i) The monkeys plucked the mangoes. They ate half the fruit and threw the rest down. Then, the wild rabbits and the deer finished them. So, everyone enjoyed the fruit and nothing was wasted.

ii) No, the man did not obey the tree god because he was greedy. iii) The golden-yellow oriole was born from the mangoes.

S.ST Question 1 Answer the following questions: a) The Himalayas stretch from Jammu and Kashmir to Arunachal Pradesh. b) The three parallel ranges of the Himalayas are:-

i) Himadari ii) Himachal iii) Shivalik

c) Farming done on the steps, in the mountains is called terrace farming. d) Due to lack of plain land terrace farming is popular in the mountains. e) Rice, Maize, Barley and Potatoes. (any two) PROJECT WORK Question 2 Circle the words that are related to the word ‘Mountains’: a) Height f) Snow k) Valley

b) Delta g) Oasis l) Plains c) Comet h) Ranges d) Peak i) Slope e) River j) Source HINDI:

SCIENCE:

Question 1 Fill in the blanks: a) Reproduction b) Young ones c) Eggs d) Yolk e) Mammals f) Embryo

Question 2 Match the following: a) Birds v) Lay eggs b) Cats iv) Give birth to young ones c) Grasshopper i) Three stage life cycle d) Albumen iii) Egg white e) Butterfly ii) Four stage life cycle

Question3 Unscramble the letters to get the names of four egg-laying animals:

LIZARD SNAKE FISH TURTLE MATHS: Question 1

a) 99999 b) 9999999 c) 1000 d) 100000 Question 2

a) 99999> 9999 >999 >99 b) 4312 > 4310 >4203 >4003 Question 3 a) 80000 b) 20 c) 6000 Question 4 Mental Maths:

a) 149 b) 700 c) 698 d) 84 e) 64 f) 10 g) Hundred h) 0 i) 36 j) 73 COMPUTER: Answer 1. Hardware Devices and Data Storage: A. Compact Disk 700MB B. Floppy Disk 1.44MB C. Blu-Ray Disk 128GB D. Hard Disk Drive 8TB E. Pen drive 2TB F. Digital Versatile Disk 4.7GB to 17GB Answer 2. Answer the following questions: a) Multimedia Card: A memory multimedia card is small in size that is used to store

data among different devices like smartphones, digital camera, music players etc.

b) Features of ROM: i) It retains the stored information even when the power is switched off. ii) The instructions stored in ROM cannot be changed, but can only be read.

c) Internal Memory

i) It is built-in memory. ii) It is designed to store data and instructions while the computer is working. External Memory i) Data is not lost in external memory even when the computer is turned off. ii) It is used to store information for a longer period.

d) RAM is compared to blackboard or calculator because it stores the information

temporarily and can be constantly overwritten with new data. Answer 3. Name all these computer parts i.e. A to G with the help of clues and descriptions given below: A) Monitor B) Hard Drive C) USB Port D) CD ROM E) Keyboard F) Printer G) Mouse

PUNJABI:

Answer key of this worksheet will be given with the next worksheet.