Grade 3 science (NSO) : Human body part 3

Links to part 1 and part 2 of the human body

Grade 3 Science (NSO) : Human body part 1

Grade 3 Science(NSO) : Human body part 2

Nervous system

This system controls all our actions, sense of feelings and thinking is called Nervous system.The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. It is essentially the body’s electrical wiring.

  • It consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body
  • Brain is the most vital organ of our body
  • It sends and receives messages to and from all parts of the body through nerves
  • Spinal chord is the bundle of nerves that runs up and down the center of the back; connects the brain to the nerves; carries signals between the brain and other parts of the body
  • The brain and spinal cord form the control center known as the central nervous system (CNS).

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Grade 3 Science (NSO) : Human body part 1

A look at the grade 2 lessons

Grade 2 Science (NSO): Human Body

Human beings: Parts of the body

Human beings : Sense organs

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

Grade 2 Science (NSO) : Rocks and minerals

Rocks

Earth is made up of hard matter called rocks. They come in different shapes, colour and size. Rocks are found under the soil, in rivers and seas. They are solid material made up of one or more minerals.

Rocks can be hard ( granite) or soft (chalk)

 

Some important rocks :

Granite : 

Granite is a light-colored igneous rock with grains large enough to be visible with the unaided eye.

It is the most common igneous rock found on the Earth’s surface

Granite is composed mainly of  quartz and fedspar  with minor amounts of mica and other minerals. This mineral composition usually gives granite a red, pink, gray, or white color with dark mineral grains visible throughout the rock .

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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

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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

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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

  1. 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)
  2. 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

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Grade 2 Science(NSO) : Food

Food that we eat

Before starting lets take a look at the Grade 1 lesson

Human beings :Healthy foods

Food from plants :

 

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Grade 2 Science (NSO): Human Body

Our wonderful body

Lets brush up on the basics first. The class 1 lessons will give a nice overview of our body.

Human beings: Parts of the body

Human Beings : Clothes we wear

Human beings :Healthy foods

Human beings : Sense organs

Human Beings and their needs Worksheets

Type of organs

External organs :

Parts of our body that we can see.

Head, skin, arms, legs, eyes , ears , nose , tongue etc

Skin in the biggest organ of our body

Sense organs are also external organs and they comprise of Nose (smell), Eyes(sight), Ears (hearing),

Tongue (taste), Skin (touch)

Internal organs :

Parts that are inside our body

Brain, heart, lungs, stomach etc

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Grade 2 English(IEO) : Adjectives

Adjectives

Listing some commonly used adjectives.

Adjectives of color :

  • Azure
  • Gray
  • Pinkish
  • Black
  • Green
  • Purple
  • Blue
  • Indigo
  • Red
  • Teal
  • Bright
  • Mauve
  • Lavender
  • Lilac
  • Cream
  • Beige
  • Rosy
  • Brown
  • Light
  • Scarlet
  • Crimson
  • Magenta
  • Silver
  • Dark
  • Multicolored
  • Turquoise
  • Drab
  • Mustard
  • Violet
  • Dull
  • Orange
  • White
  • Gold
  • Pink
  • Yellow
  • Ivory

Adjectives of Feelings:

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English IEO : One word for many words

Common one word substitutions :

    1. Depreciate
      decline in value
    2. Deteriorate
      become worse or disintegrate
    3. Eccentric
      conspicuously or grossly unconventional or unusual
    4. Ecology
      the environment as it relates to living organisms
    5. Fastidious
      giving careful attention to detail
    6. Incredible
      beyond belief or understanding
    7. Indispensable
      essential
    8. Abolish
      do away with
    9. Accelerate
      move faster
    10. Accountable
      responsible for one’s actions
    11. Amateur
      someone who pursues a study or sport as a pastime
    12. Ambivalent
      uncertain or unable to decide about what course to follow
    13. Amnesia
      partial or total loss of memory
    14. Anonymous
      having no known name or identity or known source
    15. Appreciate
      be fully aware of; realize fully
    16. Atheist
      someone who denies the existence of god
    17. Audience
      a gathering of spectators or listeners at a performance
    18. Auditor
      a qualified accountant who inspects accounting records
    19. Autobiography
      a book or account of your own life
    20. Bilingual
      using or knowing two languages
    21. Biography
      an account of the series of events making up a person’s life
    22. Colleague

      an associate that one works with
    23. Congenital
      present at birth but not necessarily hereditary
    24. Contemporaries
      all the people living at the same time or of the same age
    25. Contemporary
      occurring in the same period of time
    26. Cosmopolitan
      composed of people from many parts of the world
    27. Delegate
      a person appointed or elected to represent others
    28. Democracy
      the orientation of those who favor government by the people
    29. Tie
      fasten or secure with a rope, string, or cord
      Drawn
    30. Edible
      suitable for use as food
    31. Eligible
      qualified for or allowed or worthy of being chosen
    32. Emphasize
      stress or single out as important
    33. Epidemic
      a widespread outbreak of an infectious disease
    34. Equilibrium
      a stable situation in which forces cancel one another
    35. Eradicate
      destroy completely, as if down to the roots
    36. Etiquette
      rules governing socially acceptable behavior
    37. Glutton
      a person who is devoted to eating and drinking to excess
    38. Gregarious
      temperamentally seeking and enjoying the company of others
    39. Gullible
      naive and easily deceived or tricked
    40. Illegal
      prohibited by law or by official or accepted rules
    41. Illegible
      unable to be read
    42. Illicit
      contrary to accepted morality or convention
    43. Illiterate
      not able to read or write
    44. Immigrant
      a person who comes to a country in order to settle there
    45. Inaudible
      impossible to hear; imperceptible by the ear
    46. Inevitable
      incapable of being avoided or prevented
    47. Inflammable
      easily ignited
    48. Insatiable
      impossible to satisfy
    49. Insoluble
      incapable of being dissolved
    50. Invincible
      incapable of being overcome or subdued
    51. Invisible
      impossible or nearly impossible to see
    52. Invulnerable
      immune to attack; impregnable
    53. Invincible
      incapable of being overcome or subdued
    54. Invisible
      impossible or nearly impossible to see
    55. Invulnerable
      immune to attack; impregnable
    56. Irrelevant
      having no bearing on or connection with the subject at issue
    57. Irritable
      easily annoyed
    58. Legal
      established by or founded upon law or official rules
    59. Manuscript
      the form of a literary work submitted for publication
    60. Medieval
      relating to or belonging to the Middle Ages

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