Flower
Flowers are found in wide varieties of colours like red, orange, yellow, white, violet etc. Rose, jasmine, marigold, sunflower all are flowers.
Flower is very important part of the plant. It changes into fruits that contains seed in it, which, on getting proper condition of warmth and moisture, germinates into a new plant.
Look at the following picture of the parts of a flower:
Which one of the following parts of the plant grows into fruit?
(a) Stem
(b) Root
(c) Flower
(d) Leaf
(e) All of these
Answer: (c)
Explanation
On maturity petals and sepals dries out and ovary changes into fruit, which contains seed that gives rise to new plant on getting proper condition. Therefore, option (c) is correct and rest of the options is incorrect.
Which one of the following is a flower used as vegetable?
(a) (b) (c) (d) (e) All of these
Answer: (c)
Explanation
Tomato and brinjal are fruits, cabbage is leaf and broccoli is flower. Therefore, option (c) is correct and rest of the options is incorrect. 
Fruits
Ovary changes into fruit after fertilization. Generally plants store food in their fruits. Fruits are the source of vitamins, proteins, carbohydrates and minerals. They make our meal delicious. Fruits contain seeds which give rise to new plants.
Look at the different types of fruits in picture given below:
Seed
Look at the following picture of different types of seeds:
Seeds are present in fruits. Many fruits contain one seed in it, for example mango. Whereas fruits like papaya, water melon, pomegranate have many seeds in it.
Seeds of such fruits are not edible. But we eat seeds of some fruits that are edible and help in the growth and development of our body. These seeds are cereals, pulses, spices like wheat, maize, rice pea, beans, groundnut, mustard, black pepper etc.
Orchid’s plants have smallest seed. Some seeds are very poisonous for human and animals.
Seeds of many plants are rich in oil, which serves as a good source of fat used in food. These seeds are obtained from sunflower, mustard, peanuts, soybean, sesame etc.
Process of Seed Germination
Seed on getting air, warmth, moisture, soil and sunlight germinates. During germination roots grows downwards and shoot grows upwards, forming shoot system. Baby plant is called seedling. It uses the food stored in the seed. Seedling grows into sapling and sapling grows into plant. Plant produces seed on maturity and this process goes on.
Look at the following picture of seed germination process:
Ayush likes to eat coconut. Which part of plant does he eat?
(a) Flower
(b) Fruit
(c) Leaves
(d) Seed
(e) Stem
Answer: (d)
Explanation
Coconut is an edible seed. Therefore, option (d) is correct and rest of the options is incorrect.
The following figure is the product of which one of the following types of plants?
(a) Herbs
(b) Shrubs
(c) Tree
(d) All of these
(e) None of these
Answer: (c)
Explanation
Mango is a fruit that grows into a tree. Therefore option (c) is correct and rest of the options is incorrect.
How Plant is Useful to Animals
Plants clean the environment by taking in carbon dioxide and giving out oxygen.
Plants help in returning water to the environment through the process of transpiration.
Plants serve as the source of food to the animals.
Roots of plants hold the top layer of the soil and stop it from blowing away.
Plants provide home to many organisms like squirrels, birds, snake etc. more... 
QUICK CONCEPT REVIEW
Yesterday it was Anu's Birthday. She hosted had a wonderful party. She got number of presents from her family and friends, packed in beautiful boxes of various shapes.
The presents included delicious chocolates which were beautifully packed in round box. Her aunt gifted her doll house which was wrapped in rectangular box. She got a teddy bear from her uncle packed in a large square box.
The birthday cake was a chocolate cake in star shape. All the friends in the party wore cone shaped birthday caps and looked cute.
Anu's mother served delicious round shaped burger, spiral shaped past a (fusili) and cylindrical shaped spring rolls to her friends. There were also potato chips and crescent shaped croissants. Finally sweet spheres or 'rasgullas' were served.
We played many paper games. Anu's mother distributed square shaped construction sheets to everyone and asked them to fold the sheet according to given instructions. She told them that a square sheet had four corners and four sides. She asked them to fold the paper in such a way that it should get five corners, six corners, seven corners and eight corners consecutively. The one who is going to finish first would win a prize. They played the same game with triangular paper too.
Later Anu's mother-asked one minute quiz from kids. It was about the number of faces, number of edges and number of corners in given shapes. Sia was asked that "How many edges are there in a pencil box?. Sia answered. "The edge is where two faces meet and pencil box has twelve edges'. The question to Rina was "How many faces are there in a book?'. Rina replied 'The surface of the solid shape is called its face, hence book has two faces. The quiz master more... 
A pattern can be formed using numbers, alphabet, shapes or colors. It represents a situation/thing in a more organized and pleasing manner.
PROPERTIES OF A PATTERN
In the example above, the first term has 1 line, the second term has 2 lines, the 3rd term is a triangle formed by 3 lines, the 4th term is a rectangle formed by four lines and hence forms a pattern.
The next term in the pattern above will be a pentagon formed with 5 lines.
The terms of a pattern should be analyzed to develop a relation between them and predict the next term in the sequence.
HISTORICAL PREVIEW
Number of students with their favorite ice cream can be shown using a bar chart as given below:
| We represent 1 by I | We represent by \[\cancel{||||}\]I | ||||||||
| We represent by II | more...
LEARNING OBJECTIVES
This lesson will help you to:—
 
1. A clock helps us in knowing time.
In a clock there are three needles or hands- 'hour' hand, 'minute' hand, and "second" hand
The shortest hand is 'hour' hand.
The longest hand is 'minute' hand.
The thinnest hand which is moving very fast which is the "second" hand.
Look at the picture given below:
In order to read the clock, look at the hour hand first and then look at the minute hand.
For example, if the hour hand is at "3" and minute hand is at '12' then the time is 3o'clock.
If the minute hand is at:
‘1’, it means 5 minutes have passed so the time will become 3:05
‘2’, it means 10 minutes have passed so the time will become 3:10
'3', it means 15 minutes have passed so the time will become 3:15
'4', it means 20 minutes have passed so the time will become 3:20
'5', it means 25 minutes have passed so the time will become 3:25
‘6’, it means 30 minutes have passed so the time will become 3:30
'7', it means 35 minutes have passed so the time will become 3:35
'8', it means 40 minutes have passed so the time will become 3:40
'9', it means 45 minutes have passed so the time will become 3:45
'10', it means 50 minutes have passed so the time will become 3:50
'11', it means 55 minutes have passed so the time will become 3:55
Then, again the minute hand comes at '12', now the hour hand will come at '4' so the time will become 4 o'clock.
Now look at the clock in your more...
LEARNING OBJECTIVES
This lesson will help you to:—
MEASUREMENT OF CAPACITY OF A CONTAINER
Take a container whose capacity is to be measured. Take a water bottle whose capacity is 1 lt. fill the water bottle completely
Pour the water into the container whose capacity is to be measured count the number of times you filled the container using water bottle
SHORTCUT TO PROBLEM SOLVING
To accurately measure the quantity of something jars with measuring scales should be used. A measuring jar contains pre-defined scales marked on the glass or plastic jar and given the exact volume measure.
more...
LEARNING OBJECTIVES
This lesson will help you to:—
Examples:-
1. A paperclip weighs about 1 gram.
Try weighing a safety pin!
2. You can weight your body weight using weighing machine.
Try to measure your weight!
3. Body builders lift heavy weights every day to maintain their body.
Can you guess the weights they lift?
 
MEASURING WEIGHT
LEARNING OBJECTIVES
You can measure the length of the pencil using a ruler.
This pencil is 5 cm long. Try measuring your pencil.
Measuring tapes are used to measure large objects.
Measuring tape is also used to measure body parts.
Examples:-
MEASUREMENT USING RULER OR MEASURING TAPES
Place one end of the object with ‘0’ in the ruler/measuring tapes.
The object and the ruler/measuring tapes should be straight.
Start reading the scale on ruler/measuring tapes.
Stop reading the scale where the object ends.
Hold the last end of the object and read the scale.
SHORTCUT TO PROBLEM SOLVING
LEARNING OBJECTIVES
This lesson will help you to:—
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