Grade 3 Science (NSO) : Human body part 1

A look at the grade 2 lessons

Our body is made up of different organs and organ systems. There are in all 12 systems in our body

Integumentary system

The integumentary system consists of the skin, hair, nails, glands, and nerves. It’s main function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.

Continue reading →

Grade 3 Science (NSO) : Food Part 1 – Food Types

A look at the grade 2 lesson

Grade 2 Science(NSO) : Food

Food can be divided into three types

Energy giving food

Give us energy to work. They contain carbohydrate and fats.

Carbohydrates

They are found in foods like rice, pasta, cassava, yam etc. when starchy foods are eaten and digested, simple sugars like glucose are obtained. It is this glucose that the body uses for energy.

There are two major types of carbohydrates:

1. Simple carbohydrates (Sugar)

Fruits
Milk
White sugar you would find in a sugar bowl
Chocolates

Continue reading →

Grade 3 Science (NSO) : Flower, fruit and seed

Before starting lets take a look at the Grade 2 lessons

Plant – Types of plants

Plants – Parts we eat

Plants: Fruits

Plants : Uses of different plants

Flower

Responsible for reproduction

Colour and fragarence of flowers attract insects who act as pollinators.

Flower parts that we eat :

Continue reading →

Grade 3 Science(NSO) : Leaf

Functions of a leaf

Absorbs sunlight

Help in exchange of gases

Carries out photosynthesis

Apex : Tip of leaf

Base : Attaches to petiole ; if petiole is absent attaches directly to stem

Margin : Edge of leaf

Continue reading →

Grade 2 Science (NSO) : Good habits and safety rules

Before starting lets take a look at the Grade 1 lessons

Human beings: Good habits

Safety: Safety rules

Safety: Traffic rules

Safety: Activities and worksheets

Safety Rules

Safety rules at home :

Do not play with match sticks, scissors, switches, plugs , fire, knives etc
Keep things in proper places afetr using them
Immediately inform an adult if you get hurt

Safety rules on the road

Continue reading →

Grade3 Science (NSO) : Plants :Roots

Plants :Roots

Root

Root is the underground part of the plants body. It fixes the plant within the soil and absorbs water and mineral nutrients from the soil. It also stores excess food.

Function of roots

Roots attach the plant body to the ground. It provides support to the plant and helps in holding the plant firmly in the ground.

Root hairs of the plant absorb water and mineral from the soil and pass it to the stem.

Some roots like carrot, radish etc. store food.

Root bind the soil which otherwise may be blown away by wind or washed away by water. Root prevents soil erosion.

Types of roots

Continue reading →

Grade 2 Science (NSO): Housing and Clothing

Housing and clothing

A quick look at the Grade 1 lessons

Human Beings:Different rooms in the house

Human Beings : Clothes we wear

A house is a place where we feel safe. It protects us from the sun, rain, wind, wild animals and thieves.

Types of houses

Permanent houses
1. These houses cannot be shifted from one place to another
2. People build these houses according to their needs.
3. Huts are made of mud, straw, wood , bamboo and clay and are not very strong (also called kucha house in india)
4. Flats and bungalows are made of bricks , cement, steel and concrete(mixture of cement, sand,small stones and water). These are very strong. (also called pucca house in india)
Temporary houses
1. Houses that can be moved easily from one place to another.
2. These are also called portable houses.
3. They are easy to make and cheap
4. Example
  1. Tent : Made of nylon or canvas.
    - Used by soldiers and campers.
  2. Houseboat : House made on boats that float on water bodies.
    - It is made of wood
  3. Caravan : A house on wheels is called a caravan