TNSB - 8 - Science :: Body Movements

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Go To: TNSB-Science-Grade 8

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[Contributor- Lakshmi Seetharaman ]

Objective: To teach the children about body movements in human beings and animals and the use of bones and muscles for their movements.

Subtopics to be covered:

  1. Various joints in our body (Joints (Ball and socket joints, Pivotal joints, Hinge and fixed joints)
  2. Human Skeleton
  3. Movement of animals (eg. Earthworm, snail, cockroach, fish, birds and snakes)

Learning Outcome:

  1. Students know about various types of bones and joints in our body that help us to move in different ways.
  2. They know that skeleton is bones a framework of bones that give shape to our body and the skull is made of many bones joined together to protect very important parts of the body, the brain and other internal organs.
  3. Students get to know movements of various animals.

[Contributors - Arshea Bimal, Kripa S, Veena Prasad]


1. Take a long scale. Place the scale on your arm in such a way that the elbow is in the middle of the scale. Ask your friend to tie the scale to your arm. Try bending your arm now. Is it possible ? If not, why is it so?

2.Think of a earthworm (kenchua) and snail(ghongha) kept on a glass plate. Imagine how these animals reach from one place to another. What is the difference between man and the movement of these animals? Do they have bones in their body?

3. Think and tell which joints give this body movement

a) moving hand front to back

b) moving head up and down

c) moving wrist up and down

d) moving arm up and down

e) moving entire leg up and down

3. The class could be split up into groups while each group is assigned an animal (earthworm, cockroach, snake, etc.) and each group need to explain about the animal and its movement.

Term' 'Transliterated Term' 'Translated Term'
Body Movements பாடி மூவ்மென்ட்ஸ் உடல் இயக்கங்கள்
Bones போனஸ் எலும்புகள்
Red Blood Cells ரெட் பிளட் செல்ஸ் சிவப்பு இரத்த அணுக்கள்
White Blood Cells வைட் பிளட் செல்ஸ் வெள்ளை இரத்த அணுக்கள்
Joint ஜோஇன்ட் மூட்டு
Fibrous Joint பைப்ரஸ் ஜோஇன்ட் நாரிணைப்பு மூட்டுகள்
Cartilagenous Joint கார்டிலேஜ்னோஸ் ஜோஇன்ட் குருத்தெலும்பு மூட்டுகள்
Synovial joints ஸினோவியல் ஜோய்ண்ட்ஸ் திரவ மூட்டுகள்
Human Skeleton ஹியூமன் ஸ்கெலெக்டன் மனித எலும்புக் கூடு
Axial Skeleton அக்சியல் ஸ்கெலெக்டன் அச்சு சட்டகம்
Appendicular Skeleton அப்பெண்டிகுலார் ஸ்கெலெக்டன் இணையுறுப்பு சட்டகம்
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