15/SEPTEMBER/2021REVISIONAssignment: Revise chapter 1 & 2 and do the following exercises in Science-OCB.1. Choose the correct option.(One has been done for you.)1.
Which one can live for years?
a)
Peepal tree
b)
Potato plant
c)
Sunflower
2.
Shrubs have ______ stems.
a)
woody
b)
green
c)
soft
3.
Plants having medicinal use are usually ______
a)
shrubs
b)
climbers
c)
herbs
4.
Which plant has medicinal use?
a)
Tulsi
b)
Bean
c)
Rose
5.
A Money plant is a ______
a)
herb
b)
shrub
c)
climber
2. Fill in the blanks with given option. [branches, live, support, smaller, soft]
3. Write (t) T for True or (f) for False against the statements below.i) A creeper needs a support to prow.
4. Give one word for the following.
A. Choose the correct option from given below.1. Wheat is a ___________.a
cereal
b
nut
c
fruit
2. Sunflowers give us __________.a
food
b
oil
c
spice
3. Tomato is a _________.a
vegetable
b
fruit
c
cereal
4. Spices add taste to ____________.
a
food
b
water
c
air
5. We get sugar from _________.a
sugarcane
b
rice
c
coconut
B. Fill in the blanks with given options. [wood, flavour, tulsi, skin, rubber]1. Spices add __________ to food.2. Leaves of __________ are used to relieve cold and cough.3. Pencils are made of ____________.4. Neem leaves protect us from many __________ diseases.5. We get ___________ from rubber tree.
E. Write True or False.1. Spices make the food sweet.2. Tulsi possess medicinal value.3. Mustard oil is obtained from cloves.4. Wood is used to make pencils.5. Jute is obtained from jute plant.
F. Give one word for the following.1. Rice, wheat and barley are known as ___________.2. Arhar daal and moong daal are ___________.3. Substance which add flavour to food is __________.4. A substance which leave colour on skin ___________.5. Raw rubber is known as _________.
13/SEPTEMBER/2021REVISION
Assignment: Complete these exercises in ex. book.
08/SEPTEMBER/2021CHAPTER 7: HUMAN SAFETY
Assignment: Study chapter 7 and complete the exercises.
06/SEPTEMBER/2021CHAPTER 7: HUMAN SAFETY
Assignment: Study chapter 7 and complete the exercises.
01/SEPTEMBER/2021CHAPTER 7: HUMAN SAFETYMan has a brain, so he can analyze the safety rules to keep himself safe. Safety rules are rules of safety which helps us to look after ourselves and others. These safety rules can be applied in all spheres of life.
I. On the road1. Always be careful and alert.2. Look on both the sides before crossing.3. Use zebra crossing to cross the road.4. Do not run or play on the road.5. Use footpath for walking on the road.6. Obey the traffic lights when you cross.7. Do not touch or tease stray dogs on the way.
II. While riding a bus1. Wait in the queue.2. Never push others to get into the bus.3. Don’t get into a moving bus.4. Never come off from a moving bus.5. Do not put your head or arm out of the moving bus.
In the school1. Do not climb on the desks.2. Do not fight with your friends.3. Do not push others while using a stair case.
In the playground1. Play safe games.2. Wait for your turn on swings.
3. Always play in park or playground.4. Do not play with sharp and pointed things.
In the swimming pool1. Never go for swimming alone.2. Always use swimming tubes or floaters for swimming.3. Do not play near the swimming pool.4. Do not fight, push or pull near the pool.
At home1. Do not play with matchstick or any other fire work.
2. Do not touch any electric switch with wet hands.
3. Always wear rubber slippers when you switch on or off an electric gadget.4. Do not play with sharp objects like blades, scissors or knife.5. Do not play with broken toys or glassware. It might hurt you.
First AidIt is the immediate treatment given when a person gets hurt or injured before the arrival of doctor.First aid may be different for different injuries. General tips are given below:1. In case a person gets hurt, cover it with cotton and bandage his wound tightly to stop the blood.
2. Suppose you touch a hot pan. Immediately put your hand under water and then apply an ointment.
3. In case the wound or burn is severe, call for a doctor.
Now watch the video..... Assignment: Read chapter 7.
25/AUGUST/2021CHAPTER 6: KEEPING FITWatch the video and do the following exercises.
Assignment: complete the exercises.
23/AUGUST/2021CHAPTER 6: KEEPING FITExerciseExercise keeps the body fit. It increases blood supply to the muscles. Thus, muscles become strong. It increases the capacity to do work. It makes us active and smart.
We work all day. So we need to give rest to our body and mind. Resting relax the mind and body. It reduce the tension. Both rest and sleep makes the body and mind fresh. If proper rest is not taken the capacity to do work decreases.
Assignment: Read chapter 6 and complete the exercises.
11/AUGUST/2021CHAPTER 3 AND 4Ex.A. Choose the correct options and fill in the blanks.[ Milch, Silkworm, Tamed, Zebra, Wild]1. ______ animals live in the jungle.2. ______ gives us silk.3. ______ animals can work in a circus.4. ______ animals give us milk.5. ______ do not make home.
Ex.B. Write 'True' or 'False' :1. Sheep is a pet animal. _____2. Cheese is made from milk. _____3. Anaconda is the biggest snake. ______4. Crow is a herbivorous animal. ______5. Porcupine is a very small animal. _____
Ex.C. Give one word for the following.1. Animals that live in our homes.2. Animals that store food in the hump.3. Animals that eat both flesh and plants.4. Animals that eat only grass.ASSIGNMENT: Revise chapter 3 and 4. Complete the exercises in Science-OCB notebook.
04/AUGUST/2021CHAPTER 6: KEEPING FITGood FoodWe eat food to grow, to remain healthy and to get energy.
We eat different kinds of food. We get most of the food items from plants and animals.
Now watch the video....
Food habits1. Take your food at the proper meal times.
2. Do not eat in between meals.
3. Do not eat in excess.
4. Do not buy food from street vendors.
5. Use clean dishes, spoons and glasses to eat your food.
6. Wash your hands before and after eating.
7. Chew your food well.
Now watch the video....
Balanced DietA meal in which all the three types of food i.e. Energy giving food, body building food and protective food are present is known as balanced diet.
Taking one kind of food does not keep us healthy.
Taking junk food like noodles fills your stomach but do not keep you healthy.
Now watch the video.....AssignmentRead chapter 6.
02/AUGUST/2021CHAPTER 5: THE HUMAN BODY
Assignment: Read chapter 5 - The Human Body and complete the exercises.
28/JULY/2021CHAPTER 5: THE HUMAN BODYMusclesOur bones are covered with muscles. Muscles help the bones to move. A healthy person has strong muscles. A weak person has weak muscles.
Muscles help us to do a lot of activities.
Muscles and bones help a swimmer to swim. They help a cyclist to pedal. They help a cricketer to bowl.
Muscles help a coolie to carry load.
Muscles become strong when –
1. We take healthy food.
2. We use them regularly.
3. We do various exercises.Watch the video...
ExerciseExercise increases blood supply to muscles. Hence muscles become fit and strong. This in turn give healthy look to our body. Exercise also helps our body to grow.
PostureThe position of our body when we stand, sit or move is called posture.
Need for good posture
1. A good posture makes us look smart.
2. It keeps our body in proper shape.
3. It helps us to stay healthy.
How to keep good posture?
1. Keep you back straight. Do not lean.
2. Do not bend your neck and shoulder.
Now watch the video...Assignment: Read chapter 5.
26/JULY/2021CHAPTER 5: THE HUMAN BODYHuman beings are known to be the “beast with brain”. Brain controls all the activities performed by body.BrainBrain is the most developed organ.It is located in the skull.It helps us to judge what is wrong and what is right. It control all the activities of our body.
Now watch the video...
Human BodyThe human body is made-up of bones and muscles. All parts of our body are held tightly by bones. These bones give shape and support to our body. Muscles are attached to the bones. They help the bones to move. The outer part of body is covered with skin.
The SkeletonThe basic framework formed by bones is called the skeleton. Skeleton actually gives shape to our body. It supports and protect the internal organs. It help us to move, sit, stand and perform other functions. Our body skeleton has nearly 206 bones.
Now watch the video...Assignment: Read chapter 5.
19/JULY/2021CHAPTER 4: JUNGLE ANIMALSRead Chapter 4 then answer the following questions in Science-OCB.
Ex. F. Write True or False.
1. Elephants cannot be tamed.
Ans:
2. Crow is a herbivorous animal.
Ans:
3. Wild animals live in farms.
Ans:
4. Deer and zebra do not make their homes.
Ans:
5. Anaconda is the biggest snake.
Ans:
14/JULY/2021CHAPTER 4: JUNGLE ANIMALSHomes of Wild Animals
Wild animals live in different kinds of homes. Some live on land, some on trees and some in water. Lions live in dens. Bird build nests. Rabbit, rats and snakes live in holes in the ground.
Some wild animals, like zebras and deer, move about in the jungle. They do not make homes. They simply live under the shade of trees.
Food of Wild Animals
Herbivorous Animals
Animals that eat plants or plant products are known as herbivores or herbivorous animals.
Example : deer, zebras, giraffe, elephants, etc.
Carnivorous AnimalsAnimals that kill other animals and eat their flesh are known as carnivores or carnivorous animals.
Example : lion, tiger, wolf, crocodile, etc.
Omnivorous AnimalsAnimals that eat both plants and flesh of other animals are known as omnivores or omnivorous animals.
Example : bear, jackal, crow, rat, etc.
ScavengersSome animals eat flesh of dead animals or left overs. Such animals are called scavengers.
Example : jackals, vultures, etc.
Food Chain
Now watch the video.... Assignment: Read chapter 4.
12/JULY/2021CHAPTER 4: JUNGLE ANIMALSAnimals that live in jungles are called wild animals. Animals like the lion, tiger, giraffe, elephant, bear, owl and hyena live in the jungle. We do not keep wild animals as pets. But some animals can be tamed. Tamed animals can live with us. Elephants, tigers, lions, etc. are tamed to work in circus.
SIZE OF ANIMALSAnimals living in jungles range from very small to very big.
Hare, Porcupine, Mongoose are very small animals.
Even the rabbit and wild cat are small animals.
But the lion, tiger and bear are big animals.
However, the Elephant, Giraffe and Hippopotamus are very big animals.
Now watch the video.. Assignment: Study chapter - 4.
07/JULY/2021 CHAPTER 3: HELPING ANIMALSF. Write True or False1. Pets are lovable and friendly creatures.Ans:
2. A cat protects and guards our house.
Ans:3. A sheep is a pet animal.
Ans:4. Cheese is made from milk.
Ans:5. Silkworms collect nectar from flowers.Ans:
G. Give one word for the following.
1. Animals that live in our homes.
Ans:2. Animals that live in farms.
Ans:3. Animals that live in the jungle.
Ans:4. Animals that give us milk.
Ans:5. Animals that store food in their hump.
Ans:
05/JULY/2021CHAPTER 3: HELPING ANIMALSRead Chapter 3 then answer the following questions.
D. Write the name of the products obtained from animals from the pictures given below.
16/JUNE/2021CHAPTER 3: HELPING ANIMALSAnimal ProductsDomestic animals are of great use to us. They give us a wide range of products.
Cows, buffaloes and goats give us milk. We make curd, butter and cheese from milk. Milk and milk products keep us fit and healthy.
Hens and ducks give us eggs. Many people eat eggs. Eggs help us to grow.
Some people eat flesh of certain animals like fish, goat and hens.
The Honeybee collects nectar from flowers and collect it in the form of honey. This honey is stored in a beehive.
The Silkworm gives us silk threads. These silk threads are used to make silk cloth.
Sheep give us wool. Wool is used to make woolen clothes. We wear woolen clothes in winter. They keep us warm.
Some animals like elephants, horses, oxen, camels, mules and donkeys are used to carry load.
The skin of some animals like buffalo, sheep, camel, snake and crocodile is used to make leather. We use leather to make shoes, suitcases, purses and bags.
Now watch the video... Assignment: Read and understand chapter 3.
14/JUNE/2021CHAPTER 3: HELPING ANIMALSMost of the animals are useful to us. Depending upon the use we classify the animals into various categories. Some of these animals are kept at home, some in farms and some of them live in jungle.
Pet Animals
Animals that are kept at home are known as pet animals or pets. Some pet animals like dog and cat help us. A dog guards our house and a cat chases mice away. Pets like parrot, rabbit, turtle and goose are kept for pleasure. Pets are lovable and friendly.
Domestic AnimalsSome animals are tamed and kept at farms. These animals are called domestic animals. Domestic animals help us in many ways.Cows, goats, hens, sheep, ducks and horses are some of the domestic animals.
Wild Animals
Wild animals live in jungle. These animals do not help us. Some animals may be given special training to help us. Elephants are the best example.
Watch the video....
Assignments:
1. Read Chapter - 3 and try to understand.
9/JUNE/2021GENERAL SCIENCE CLASS TESTCHAPTER 1 and 2TIME: 12:20 PM
7/JUNE/2021Read Chapter 1 and 2 then answer the following questions.A. Choose the correct option from those given below.
1 Cotton is a a) fruit b) seed c) fiber 2 Wood is used for making a) pencil b) eraser c) pen 3 Walnut is a a) cereal b) pulse c) nut 4 Grape vine is a a) climber b) creeper c) runner 5 Trees live for a) one season b) few seasons c) many season 6 A hard and bushy plant is a a) tree b) shrub c) herb 7 Coffee and tea are a) juices b) beverages c) cereals 8 Plants give out a) oxygen gas b) nitrogen gas c) hydrogen gas 9 Rose plants have a) thorns b) fruits c) tendrils 10 Mint is a a) herb b) shrub c) tree
B. Fill in the missing letters to get the complete word.
1 We drink it with milk and sugar. Ans C __ F __ E 2 We get it from rubber tree. Ans L __ T __ X 3 It is used to make things sweet. Ans __ U __ __ R 4 It is used for making perfumes. Ans __ O __ E 5 Small plants having medicinal value. Ans H __ R __ S 6 Plants which live for hundreds of years. Ans T __ E __ S
C. Write three examples of each plant.A Trees 1) 2) 3) B Fruits 1) 2) 3) C Vegetables 1) 2) 3) D Nuts 1) 2) 3) E Cereals 1) 2) 3) F Climbers 1) 2) 3) G Creepers 1) 2) 3) H Thorny plants 1) 2) 3)
Assignment: Revise chapter 1 and 2 for class test which will be on 9th June, 2021
2/JUNE/2021CHAPTER 2: PLANT PRODUCTSDo the following questions in your OCB ex-book.A. Choose the correct option from given below.1. Wheat is a ___________.a
cereal
b
nut
c
fruit
2. Sunflowers give us __________.a
food
b
oil
c
spice
3. Tomato is a _________.a
vegetable
b
fruit
c
cereal
4. Spices add taste to ____________.
a
food
b
water
c
air
5. We get sugar from _________.
a
sugarcane
b
rice
c
coconut
B. Fill in the blanks with given options. [wood, flavour, tulsi, skin, rubber]1. Spices add __________ to food.2. Leaves of __________ are used to relieve cold and cough.3. Pencils are made of ____________.4. Neem leaves protect us from many __________ diseases.5. We get ___________ from rubber tree.
C. Match the following products with their sources.
E. Write True or False.1. Spices make the food sweet.2. Tulsi possess medicinal value.3. Mustard oil is obtained from cloves.4. Wood is used to make pencils.5. Jute is obtained from jute plant.
F. Give one word for the following.1. Rice, wheat and barley are known as ___________.2. Arhar daal and moong daal are ___________.3. Substance which add flavour to food is __________.4. A substance which leave colour on skin ___________.5. Raw rubber is known as _________.
31/MAY/2021CHAPTER 2: PLANT PRODUCTSSpicesMany spices come from plants.These add flavour to our food and make it yummy.Example : cardamom, cinnamon, pepper, turmeric.
OilWe get oil from plants. We use oil for cooking, applying on our body and hair etc.
MedicinesMany herbs like tulsi, turmeric and mint have medicinal value.Leaves of neem are used to safeguard ourselves from many skin diseases.Many other medicines are obtained from plants.
WoodPlants give us wood. Wood is used for making pencils, furniture, windows, doors, etc. All the impressive work done at our houses are mainly of wood.
Other Products
We get rubber from rubber trees.Rubber is used to make tyres, pipes, gumboots and erasers.RUBBER TREE
Many herbs are used for making cosmetics. 
Many flower extracts are used for making perfumes.
Many plants contain dyes.These dyes leave a mark on the hair and skin and hence any pattern can be drawn.Example : henna / mehandi.
Now watch this video....Assignments: 1. Read chapter 2 and try to understand it.2. Write the name of three medicinal plants in your OCB-Science exercise book.
24/MAY/2021CHAPTER 2: PLANT PRODUCTSNow watch this video....Plants are the living organisms which are fixed to the soil. They can’t move but still provide us with fresh and clean surroundings. They make our place beautiful. Plants have many uses, few of them are listed below.
Plants and Trees help us to get Rain
Watch this video about how forests generate rain... 
FoodWe get food from plants.
Plants give us• Fruits like mango, orange, watermelon, melon, etc.• Vegetables like brinjal, tomato, onion, potato, etc.• Nuts like groundnut, coconut, walnut, cashew nut, etc.• Cereals like rice, wheat, maize.• Pulses like arhar dal, moong dal, etc.• Sugar from sugarcane.
SpicesMany spices come from plants.These add flavour to our food and make it yummy.Example : cardamom, cinnamon, pepper, turmeric.OilWe get oil from plants. We use oil for cooking, applying on our body and hair etc.
Assignment: Read pages 15, 16 and Do the following exercises in the OCB notebook.1. Write five fruits' name.2. Name five vegetables' name.
17/MAY/2021CHAPTER 1: PLANTS AROUND USAssignment: Complete the given exercises in the OCB notebook.
1. Choose the correct option.(One has been done for you.)1.
Which one can live for years?
a)
Peepal tree
b)
Potato plant
c)
Sunflower
2.
Shrubs have ______ stems.
a)
woody
b)
green
c)
soft
3.
Plants having medicinal use are usually ______
a)
shrubs
b)
climbers
c)
herbs
4.
Which plant has medicinal use?
a)
Tulsi
b)
Bean
c)
Rose
5.
A Money plant is a ______
a)
herb
b)
shrub
c)
climber
2. Fill in the blanks with given option. [branches, live, support, smaller, soft]
3. Write (t) T for True or (f) for False against the statements below.i) A creeper needs a support to prow.
4. Give one word for the following.
10/MAY/2021CHAPTER 1: PLANTS AROUND USClimbersClimbers have thin, long and weak stems.They need support as their weak stems cannot bear the weight of the plant.
Life of such plant varies with nature.
Example : grapevine, money plant, bean and pea plant.
15/SEPTEMBER/2021
REVISION
Assignment: Revise chapter 1 & 2 and do the following exercises in Science-OCB.
1. Choose the correct option.
(One has been done for you.)
1. | Which one can live for years? | |||||
a) | Peepal tree | b) | Potato plant | c) | Sunflower | |
2. | Shrubs have ______ stems. | |||||
a) | woody | b) | green | c) | soft | |
3. | Plants having medicinal use are usually ______ | |||||
a) | shrubs | b) | climbers | c) | herbs | |
4. | Which plant has medicinal use? | |||||
a) | Tulsi | b) | Bean | c) | Rose | |
A Money plant is a ______ | ||||||
a) | herb | b) | shrub | c) | climber | |
2. Fill in the blanks with given option.
[branches, live, support, smaller, soft]
i) Climbers need __________ to grow.
ii) Shrubs are ___________ than trees.
iii) Most trees and shrubs _________ for many years.
iv) Herbs have __________ stems.
v) Trees have many ________.
3. Write (t) T for True or (f) for False against the statements below.
i) A creeper needs a support to prow.
ii) Herbs live for many years.
iii) A shrub has a thin stem.
iv) Trees have hard stems.
v) Shrubs have few branches.
4. Give one word for the following.
i) Plants which climb up a support.
ii) Plants which have hard and strong trunks.
iii) Plants which move along the ground.
iv) Plants having woody and bushy stems.
v) Plants having medicinal value.
A. Choose the correct option from given below.
1. Wheat is a ___________.
a | cereal | b | nut | c | fruit |
2. Sunflowers give us __________.
a | food | b | oil | c | spice |
3. Tomato is a _________.
a | vegetable | b | fruit | c | cereal |
4. Spices add taste to ____________.
a | food | b | water | c | air |
5. We get sugar from _________.
a | sugarcane | b | rice | c | coconut |
B. Fill in the blanks with given options.
[wood, flavour, tulsi, skin, rubber]
1. Spices add __________ to food.
2. Leaves of __________ are used to relieve cold and cough.
3. Pencils are made of ____________.
4. Neem leaves protect us from many __________ diseases.
5. We get ___________ from rubber tree.
E. Write True or False.
1. Spices make the food sweet.
2. Tulsi possess medicinal value.
3. Mustard oil is obtained from cloves.
4. Wood is used to make pencils.
5. Jute is obtained from jute plant.
F. Give one word for the following.
1. Rice, wheat and barley are known as ___________.
2. Arhar daal and moong daal are ___________.
3. Substance which add flavour to food is __________.
4. A substance which leave colour on skin ___________.
5. Raw rubber is known as _________.
13/SEPTEMBER/2021
REVISION
Assignment: Complete these exercises in ex. book.
08/SEPTEMBER/2021
CHAPTER 7: HUMAN SAFETY
Assignment: Study chapter 7 and complete the exercises.
06/SEPTEMBER/2021
CHAPTER 7: HUMAN SAFETY
Assignment: Study chapter 7 and complete the exercises.
01/SEPTEMBER/2021
CHAPTER 7: HUMAN SAFETY
Man has a brain, so he can analyze the safety rules to keep himself safe. Safety rules are rules of safety which helps us to look after ourselves and others. These safety rules can be applied in all spheres of life.
I. On the road
1. Always be careful and alert.
2. Look on both the sides before crossing.
3. Use zebra crossing to cross the road.
4. Do not run or play on the road.
5. Use footpath for walking on the road.
6. Obey the traffic lights when you cross.
7. Do not touch or tease stray dogs on the way.
II. While riding a bus
1. Wait in the queue.
2. Never push others to get into the bus.
3. Don’t get into a moving bus.
4. Never come off from a moving bus.
5. Do not put your head or arm out of the moving bus.
In the school
1. Do not climb on the desks.
2. Do not fight with your friends.
3. Do not push others while using a stair case.
In the playground
1. Play safe games.
2. Wait for your turn on swings.
3. Always play in park or playground.
4. Do not play with sharp and pointed things.
In the swimming pool
1. Never go for swimming alone.
2. Always use swimming tubes or floaters for swimming.
3. Do not play near the swimming pool.
4. Do not fight, push or pull near the pool.
At home
1. Do not play with matchstick or any other fire work.
2. Do not touch any electric switch with wet hands.
3. Always wear rubber slippers when you switch on or off an electric gadget.
4. Do not play with sharp objects like blades, scissors or knife.
5. Do not play with broken toys or glassware. It might hurt you.
First Aid
It is the immediate treatment given when a person gets hurt or injured before the arrival of doctor.
First aid may be different for different injuries. General tips are given below:
1. In case a person gets hurt, cover it with cotton and bandage his wound tightly to stop the blood.
2. Suppose you touch a hot pan. Immediately put your hand under water and then apply an ointment.
3. In case the wound or burn is severe, call for a doctor.
Now watch the video.....
Assignment: Read chapter 7.
25/AUGUST/2021
CHAPTER 6: KEEPING FIT
Watch the video and do the following exercises.
Assignment: complete the exercises.
23/AUGUST/2021
CHAPTER 6: KEEPING FIT
Exercise
Exercise keeps the body fit. It increases blood supply to the muscles. Thus, muscles become strong. It increases the capacity to do work. It makes us active and smart.
We work all day. So we need to give rest to our body and mind. Resting relax the mind and body. It reduce the tension. Both rest and sleep makes the body and mind fresh. If proper rest is not taken the capacity to do work decreases.
Assignment: Read chapter 6 and complete the exercises.
11/AUGUST/2021
CHAPTER 3 AND 4
Ex.A. Choose the correct options and fill in the blanks.
[ Milch, Silkworm, Tamed, Zebra, Wild]
1. ______ animals live in the jungle.
2. ______ gives us silk.
3. ______ animals can work in a circus.
4. ______ animals give us milk.
5. ______ do not make home.
Ex.B. Write 'True' or 'False' :
1. Sheep is a pet animal. _____
2. Cheese is made from milk. _____
3. Anaconda is the biggest snake. ______
4. Crow is a herbivorous animal. ______
5. Porcupine is a very small animal. _____
Ex.C. Give one word for the following.
1. Animals that live in our homes.
2. Animals that store food in the hump.
3. Animals that eat both flesh and plants.
4. Animals that eat only grass.
ASSIGNMENT: Revise chapter 3 and 4. Complete the exercises in Science-OCB notebook.
04/AUGUST/2021
CHAPTER 6: KEEPING FIT
Good Food
We eat different kinds of food. We get most of the food items from plants and animals.
Now watch the video....
Food habits
1. Take your food at the proper meal times.
2. Do not eat in between meals.
3. Do not eat in excess.
4. Do not buy food from street vendors.
5. Use clean dishes, spoons and glasses to eat your food.
6. Wash your hands before and after eating.
7. Chew your food well.
2. Do not eat in between meals.
3. Do not eat in excess.
4. Do not buy food from street vendors.
5. Use clean dishes, spoons and glasses to eat your food.
6. Wash your hands before and after eating.
7. Chew your food well.
Now watch the video....
Balanced Diet
A meal in which all the three types of food i.e. Energy giving food, body building food and protective food are present is known as balanced diet.
Taking one kind of food does not keep us healthy.
Taking junk food like noodles fills your stomach but do not keep you healthy.
Taking one kind of food does not keep us healthy.
Taking junk food like noodles fills your stomach but do not keep you healthy.
Now watch the video.....
Assignment
Read chapter 6.
02/AUGUST/2021
CHAPTER 5: THE HUMAN BODY
Assignment: Read chapter 5 - The Human Body and complete the exercises.
28/JULY/2021
CHAPTER 5: THE HUMAN BODY
Muscles
Our bones are covered with muscles. Muscles help the bones to move. A healthy person has strong muscles. A weak person has weak muscles.
Muscles help us to do a lot of activities.
Muscles and bones help a swimmer to swim. They help a cyclist to pedal. They help a cricketer to bowl.
Muscles help a coolie to carry load.
Muscles become strong when –
1. We take healthy food.
2. We use them regularly.
3. We do various exercises.
Watch the video...
Exercise
Exercise increases blood supply to muscles. Hence muscles become fit and strong. This in turn give healthy look to our body. Exercise also helps our body to grow.
Posture
The position of our body when we stand, sit or move is called posture.
Need for good posture
1. A good posture makes us look smart.
2. It keeps our body in proper shape.
3. It helps us to stay healthy.
How to keep good posture?
1. Keep you back straight. Do not lean.
2. Do not bend your neck and shoulder.
Now watch the video...
Assignment: Read chapter 5.
26/JULY/2021
CHAPTER 5: THE HUMAN BODY
Human beings are known to be the “beast with brain”. Brain controls all the activities performed by body.
Brain
Brain is the most developed organ.
It is located in the skull.
It helps us to judge what is wrong and what is right. It control all the activities of our body.
Now watch the video...
Human Body
The human body is made-up of bones and muscles. All parts of our body are held tightly by bones. These bones give shape and support to our body. Muscles are attached to the bones. They help the bones to move. The outer part of body is covered with skin.
The Skeleton
The basic framework formed by bones is called the skeleton. Skeleton actually gives shape to our body. It supports and protect the internal organs. It help us to move, sit, stand and perform other functions. Our body skeleton has nearly 206 bones.
Now watch the video...
Assignment: Read chapter 5.
19/JULY/2021
CHAPTER 4: JUNGLE ANIMALS
Read Chapter 4 then answer the following questions in Science-OCB.
1. Elephants cannot be tamed.
Ans:
2. Crow is a herbivorous animal.
Ans:
3. Wild animals live in farms.
Ans:
4. Deer and zebra do not make their homes.
Ans:
5. Anaconda is the biggest snake.
Ans:
14/JULY/2021
CHAPTER 4: JUNGLE ANIMALS
Homes of Wild Animals
Wild animals live in different kinds of homes. Some live on land, some on trees and some in water. Lions live in dens. Bird build nests. Rabbit, rats and snakes live in holes in the ground.
Some wild animals, like zebras and deer, move about in the jungle. They do not make homes. They simply live under the shade of trees.
Food of Wild Animals
Herbivorous Animals
Animals that eat plants or plant products are known as herbivores or herbivorous animals.
Example : deer, zebras, giraffe, elephants, etc.
Example : lion, tiger, wolf, crocodile, etc.
Animals that eat both plants and flesh of other animals are known as omnivores or omnivorous animals.
Example : bear, jackal, crow, rat, etc.
Example : jackals, vultures, etc.
Food Chain
Wild animals live in different kinds of homes. Some live on land, some on trees and some in water. Lions live in dens. Bird build nests. Rabbit, rats and snakes live in holes in the ground.
Some wild animals, like zebras and deer, move about in the jungle. They do not make homes. They simply live under the shade of trees.
Food of Wild Animals
Animals that eat plants or plant products are known as herbivores or herbivorous animals.
Example : deer, zebras, giraffe, elephants, etc.
Carnivorous Animals
Animals that kill other animals and eat their flesh are known as carnivores or carnivorous animals.Example : lion, tiger, wolf, crocodile, etc.
Omnivorous Animals
Example : bear, jackal, crow, rat, etc.
Scavengers
Some animals eat flesh of dead animals or left overs. Such animals are called scavengers.Example : jackals, vultures, etc.
Food Chain
Now watch the video....
Assignment: Read chapter 4.
12/JULY/2021
CHAPTER 4: JUNGLE ANIMALS
Animals that live in jungles are called wild animals. Animals like the lion, tiger, giraffe, elephant, bear, owl and hyena live in the jungle. We do not keep wild animals as pets. But some animals can be tamed. Tamed animals can live with us. Elephants, tigers, lions, etc. are tamed to work in circus.
Hare, Porcupine, Mongoose are very small animals.
Even the rabbit and wild cat are small animals.
But the lion, tiger and bear are big animals.
However, the Elephant, Giraffe and Hippopotamus are very big animals.
SIZE OF ANIMALS
Animals living in jungles range from very small to very big.Hare, Porcupine, Mongoose are very small animals.
Even the rabbit and wild cat are small animals.
But the lion, tiger and bear are big animals.
However, the Elephant, Giraffe and Hippopotamus are very big animals.
Now watch the video..
Assignment: Study chapter - 4.
07/JULY/2021
CHAPTER 3: HELPING ANIMALS
F. Write True or False
1. Pets are lovable and friendly creatures.Ans:
2. A cat protects and guards our house.
Ans:
2. A cat protects and guards our house.
Ans:
3. A sheep is a pet animal.
Ans:
Ans:
4. Cheese is made from milk.
Ans:
Ans:
5. Silkworms collect nectar from flowers.
Ans:
G. Give one word for the following.
1. Animals that live in our homes.
Ans:
G. Give one word for the following.
1. Animals that live in our homes.
Ans:
2. Animals that live in farms.
Ans:
Ans:
3. Animals that live in the jungle.
Ans:
Ans:
4. Animals that give us milk.
Ans:
Ans:
5. Animals that store food in their hump.
Ans:
05/JULY/2021
CHAPTER 3: HELPING ANIMALS
Read Chapter 3 then answer the following questions.
D. Write the name of the products obtained from animals from the pictures given below.
D. Write the name of the products obtained from animals from the pictures given below.
16/JUNE/2021
CHAPTER 3: HELPING ANIMALS
Animal Products
Domestic animals are of great use to us. They give us a wide range of products.
Cows, buffaloes and goats give us milk. We make curd, butter and cheese from milk. Milk and milk products keep us fit and healthy.
Hens and ducks give us eggs. Many people eat eggs. Eggs help us to grow.
Some people eat flesh of certain animals like fish, goat and hens.
The Honeybee collects nectar from flowers and collect it in the form of honey. This honey is stored in a beehive.
The Silkworm gives us silk threads. These silk threads are used to make silk cloth.
Sheep give us wool. Wool is used to make woolen clothes. We wear woolen clothes in winter. They keep us warm.
Some animals like elephants, horses, oxen, camels, mules and donkeys are used to carry load.
The skin of some animals like buffalo, sheep, camel, snake and crocodile is used to make leather. We use leather to make shoes, suitcases, purses and bags.
Now watch the video...
Assignment:
Read and understand chapter 3.
14/JUNE/2021
CHAPTER 3: HELPING ANIMALS
Most of the animals are useful to us. Depending upon the use we classify the animals into various categories. Some of these animals are kept at home, some in farms and some of them live in jungle.
Pet Animals
Animals that are kept at home are known as pet animals or pets. Some pet animals like dog and cat help us. A dog guards our house and a cat chases mice away. Pets like parrot, rabbit, turtle and goose are kept for pleasure. Pets are lovable and friendly.
Animals that are kept at home are known as pet animals or pets. Some pet animals like dog and cat help us. A dog guards our house and a cat chases mice away. Pets like parrot, rabbit, turtle and goose are kept for pleasure. Pets are lovable and friendly.
Some animals are tamed and kept at farms. These animals are called domestic animals.
Domestic animals help us in many ways.
Cows, goats, hens, sheep, ducks and horses are some of the domestic animals.
Wild Animals
Wild Animals
Wild animals live in jungle. These animals do not help us. Some animals may be given
special training to help us. Elephants are the best example.
Watch the video....
1. Read Chapter - 3 and try to understand.
9/JUNE/2021
GENERAL SCIENCE CLASS TEST
CHAPTER 1 and 2
TIME: 12:20 PM
7/JUNE/2021
Read Chapter 1 and 2 then answer the following questions.
A. Choose the correct option from those given below.
1 | Cotton is a | ||
| a) fruit | b) seed | c) fiber | |
2 | Wood is used for making | ||
| a) pencil | b) eraser | c) pen | |
3 | Walnut is a | ||
| a) cereal | b) pulse | c) nut | |
4 | Grape vine is a | ||
| a) climber | b) creeper | c) runner | |
5 | Trees live for | ||
| a) one season | b) few seasons | c) many season | |
6 | A hard and bushy plant is a | ||
| a) tree | b) shrub | c) herb | |
7 | Coffee and tea are | ||
| a) juices | b) beverages | c) cereals | |
8 | Plants give out | ||
| a) oxygen gas | b) nitrogen gas | c) hydrogen gas | |
9 | Rose plants have | ||
| a) thorns | b) fruits | c) tendrils | |
10 | Mint is a | ||
| a) herb | b) shrub | c) tree | |
B. Fill in the missing letters to get the complete word.
1 | We drink it with milk and sugar. |
Ans | C __ F __ E |
2 | We get it from rubber tree. |
Ans | L __ T __ X |
3 | It is used to make things sweet. |
Ans | __ U __ __ R |
4 | It is used for making perfumes. |
Ans | __ O __ E |
5 | Small plants having medicinal value. |
Ans | H __ R __ S |
6 | Plants which live for hundreds of years. |
Ans | T __ E __ S |
C. Write three examples of each plant.
A | Trees | ||
| 1) | 2) | 3) | |
B | Fruits | ||
| 1) | 2) | 3) | |
C | Vegetables | ||
| 1) | 2) | 3) | |
D | Nuts | ||
| 1) | 2) | 3) | |
E | Cereals | ||
| 1) | 2) | 3) | |
F | Climbers | ||
| 1) | 2) | 3) | |
G | Creepers | ||
| 1) | 2) | 3) | |
H | Thorny plants | ||
| 1) | 2) | 3) | |
Assignment:
Revise chapter 1 and 2 for class test which will be on 9th June, 2021
2/JUNE/2021
CHAPTER 2: PLANT PRODUCTS
Do the following questions in your OCB ex-book.
A. Choose the correct option from given below.
1. Wheat is a ___________.
a | cereal | b | nut | c | fruit |
2. Sunflowers give us __________.
a | food | b | oil | c | spice |
a | vegetable | b | fruit | c | cereal |
4. Spices add taste to ____________.
a | food | b | water | c | air |
5. We get sugar from _________.
a | sugarcane | b | rice | c | coconut |
B. Fill in the blanks with given options.
[wood, flavour, tulsi, skin, rubber]
1. Spices add __________ to food.
2. Leaves of __________ are used to relieve cold and cough.
3. Pencils are made of ____________.
4. Neem leaves protect us from many __________ diseases.
5. We get ___________ from rubber tree.
C. Match the following products with their sources.
E. Write True or False.
1. Spices make the food sweet.
2. Tulsi possess medicinal value.
3. Mustard oil is obtained from cloves.
4. Wood is used to make pencils.
5. Jute is obtained from jute plant.
F. Give one word for the following.
1. Rice, wheat and barley are known as ___________.
2. Arhar daal and moong daal are ___________.
3. Substance which add flavour to food is __________.
4. A substance which leave colour on skin ___________.
5. Raw rubber is known as _________.
31/MAY/2021
CHAPTER 2: PLANT PRODUCTS
Spices
Many spices come from plants.
These add flavour to our food and make it yummy.
Example : cardamom, cinnamon, pepper, turmeric.
Oil
We get oil from plants. We use oil for cooking, applying on our body and hair etc.
Medicines
Many herbs like tulsi, turmeric and mint have medicinal value.
Leaves of neem are used to safeguard ourselves from many skin diseases.
Many other medicines are obtained from plants.
Wood
Plants give us wood. Wood is used for making pencils, furniture, windows, doors, etc. All the impressive work done at our houses are mainly of wood.
Other Products
We get rubber from rubber trees.
Rubber is used to make tyres, pipes, gumboots and erasers.
RUBBER TREE
Many herbs are used for making cosmetics.
Many flower extracts are used for making perfumes.
Many plants contain dyes.
These dyes leave a mark on the hair and skin and hence any pattern can be drawn.
Example : henna / mehandi.
Now watch this video....
Assignments:
1. Read chapter 2 and try to understand it.
2. Write the name of three medicinal plants in your OCB-Science exercise book.
24/MAY/2021
CHAPTER 2: PLANT PRODUCTS
Now watch this video....
Plants are the living organisms which are fixed to the soil. They can’t move but still provide us with fresh and clean surroundings. They make our place beautiful. Plants have many uses, few of them are listed below.
Plants and Trees help us to get Rain
Watch this video about how forests generate rain...
Food
We get food from plants.
Plants give us
• Fruits like mango, orange, watermelon, melon, etc.
• Vegetables like brinjal, tomato, onion, potato, etc.
• Nuts like groundnut, coconut, walnut, cashew nut, etc.
• Cereals like rice, wheat, maize.
• Pulses like arhar dal, moong dal, etc.
• Sugar from sugarcane.
Spices
Many spices come from plants.
These add flavour to our food and make it yummy.
Example : cardamom, cinnamon, pepper, turmeric.
Oil
We get oil from plants. We use oil for cooking, applying on our body and hair etc.
Assignment:
Read pages 15, 16 and Do the following exercises in the OCB notebook.
1. Write five fruits' name.
2. Name five vegetables' name.
17/MAY/2021
CHAPTER 1: PLANTS AROUND US
Assignment:
Complete the given exercises in the OCB notebook.
1. Choose the correct option.
(One has been done for you.)
1. | Which one can live for years? | |||||
a) | Peepal tree | b) | Potato plant | c) | Sunflower | |
2. | Shrubs have ______ stems. | |||||
a) | woody | b) | green | c) | soft | |
3. | Plants having medicinal use are usually ______ | |||||
a) | shrubs | b) | climbers | c) | herbs | |
4. | Which plant has medicinal use? | |||||
a) | Tulsi | b) | Bean | c) | Rose | |
A Money plant is a ______ | ||||||
a) | herb | b) | shrub | c) | climber | |
2. Fill in the blanks with given option.
[branches, live, support, smaller, soft]
i) Climbers need __________ to grow.
ii) Shrubs are ___________ than trees.
iii) Most trees and shrubs _________ for many years.
iv) Herbs have __________ stems.
v) Trees have many ________.
3. Write (t) T for True or (f) for False against the statements below.
i) A creeper needs a support to prow.
ii) Herbs live for many years.
iii) A shrub has a thin stem.
iv) Trees have hard stems.
v) Shrubs have few branches.
4. Give one word for the following.
i) Plants which climb up a support.
ii) Plants which have hard and strong trunks.
iii) Plants which move along the ground.
iv) Plants having woody and bushy stems.
v) Plants having medicinal value.
10/MAY/2021
CHAPTER 1: PLANTS AROUND US
Climbers
Climbers have thin, long and weak stems.
Life of such plant varies with nature.
Example : grapevine, money plant, bean and pea plant.
CreepersSome plants have weak and thin stems.
These plants bear heavy fruits.
They cannot climb without support.
Hence, they creep on the ground.
These plants are thus called creepers.
Creepers live for one season only.
Example : watermelon, pumpkin and bottle guard.
Thorny PlantsSome plants have sharp, woody and pointed structures.These structures save them from enemies.
Such plants are known as thorny plants.
Example : rose, cactus.
Now watch this video...Assignment:1. Read and understand chapter 1- Plants Around Us and watch the video again.
These plants bear heavy fruits.
They cannot climb without support.
Hence, they creep on the ground.
These plants are thus called creepers.
Creepers live for one season only.
Example : watermelon, pumpkin and bottle guard.
Such plants are known as thorny plants.
Example : rose, cactus.
Now watch this video...
03/MAY/2021
CHAPTER 1: PLANTS AROUND US
Normally all plants are associated with the colour green. Thus, we use the term ‘Greenery’ commonly for plants. Plants give us fresh air, food and wood for various purposes. Plants are found in different shapes and sizes. Some plants are small and some are big. Big plants usually grow high. Some plants are weak and some are strong. Almost all green plants prepare their own food.
Now watch this video....
Types of plants
TreesTrees are tall plants with woody trunks.Trees are strong. Most trees have branches.Some trees bear flowers and fruits, some trees may not.The roots of trees penetrate deep into the soil. Trees can live for years.
Example : mango tree, peepal tree, banyan tree, pine tree.
ShrubsShrubs have thin and woody stems. They have many branches.So they look bushy. Most shrubs live for years.
Example : rose, hibiscus, sunflower and cotton.
HerbsHerbs have thin, soft and green stems. They are smaller than shrubs. They have no wood. Many herbs have medicinal use. Herbs live for a few months only.
Example : brinjal, tulsi, mint and spinach.
Assignment: Study pages 6 and 7. Do the following questions in Science OCB.1. What are trees?2. Name two shrubs.3. Name two herbs.
Types of plants
Trees
Trees are tall plants with woody trunks.
Trees are strong. Most trees have branches.
Some trees bear flowers and fruits, some trees may not.
The roots of trees penetrate deep into the soil. Trees can live for years.
Example : mango tree, peepal tree, banyan tree, pine tree.
Shrubs
Shrubs have thin and woody stems. They have many branches.
So they look bushy. Most shrubs live for years.
Example : rose, hibiscus, sunflower and cotton.
Herbs
Herbs have thin, soft and green stems. They are smaller than shrubs. They have no wood. Many herbs have medicinal use. Herbs live for a few months only.
Example : brinjal, tulsi, mint and spinach.
Assignment:
Study pages 6 and 7. Do the following questions in Science OCB.
1. What are trees?
2. Name two shrubs.
3. Name two herbs.
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