3rd Standard Social Science Term-III
Unit - 2
Mineral Resources
A conversation between a father and son in their new house where some electrical work is going on. The son picks up an insulated copper wire from the ground.
Son : What is this daddy?
Father : That is a wire. We are using it to give electrical connection in our house.
Son : This is blue thick wire and there are many thin metal wires inside this.
Father : The thin metal wires are made up of copper.
Son : Copper?
Father : Copper is one of the most used mineral in today's world.
Son : I have read about minerals in school. They are very useful and are found naturally on the Earth.
Father : You are right. Copper is very good conductor of electricity.
Son : Is it?
Father : Yes, Copper is used in all electrical appliances including computers, televisions, mobile phones and other electronic devices.
Son : Wow. I did not know that. Tell me about other useful minerals.
Father : Another widely used mineral is Iron ore. It is mainly used to produce iron.
Son : What are the uses of Iron?
Father : Iron is used to make vehicles, engines, railway tracks, ships, buildings, furniture, paper clips, tools, bicycle and thousands of other items.
Son : Interesting. Is Gold Ore a mineral?
Father : Yes it is. Gold is extracted from Gold Ore. It is considered as on of the most precious mineral.
Son : That's why it is used in making jewels.
Father : You are right. Gold is also a very good conductor of electricity and it is found in small amounts in electronic devices including mobile phones, televisions and so on.
Son : Oh is it?
Father : Another very useful mineral is Bauxite.
Son : Bauxite. I have never heard of it.
Father : Bauxite is used to make Aluminium. Aluminium is used in electronics, construction, vehicles and even in utensils.
Son : Tell me more about bauxite, Dad.
Father : Bauxite is used in Aircraft making industry, electrical industry and is also used in making machines.
Son : Interesting.
Father : Bauxite is used to make paper, purify water and refine petroleum. It is also used to manufacture rubber and cosmetics.
Son : This is very informative, Dad.
Father : Have you heard about Zinc?
Son : No Dad. Tell me about Zinc.
Father : Zinc is called the essential trace element because very small amout of zinc is neccessary for human health. Our body does not store excess zinc, it must be consumed regularly as part of the diet. Common food sources of zinc include red meat, white meat and sea food.
Son : What are the other uses of zinc?
Father : Zinc oxide is widely used in the manufacture of many products such as paints, rubbers, cosmetics, medicines inks, batteries, textiles and electrical equipments.
Son : Oh! Really?
Father : The another most useful mineral is Potash.
Son : What are the uses of Potash?
Father : 95% of Potash is used for making fertilizers. If the soil does not have enough potassium, potash fertilizers are used to improve the quality of soil. The remaining 5% potash is used in commercial and industrial products such as soap.
Son : Thank you, Dad. This has been very useful. I am going to share this with my friends.
Father : That's a good idea! Son.
Unit - 3
Child Safety
Father is reading the newspaper. While the son and daughter peeps into the paper and finds an advertisement of 'Childline - 1098'.
Son : Dad, What does this Childline number mean?
Father : Childline number is a helpline number for children under the age of eighteen.
Daughter : Oh! Do they help children in doing their homework?
Father : Ha, ha! No, dear. It helps children who are in need of help and care.
Son : I didn't know about this.
Father : Children service was first established as a project in the year 1996. Later between 1998-99, Childline was established all across India under the Ministry of Women and Child development.
Son : It has been there for a very long time then.
Father : Yes! In May 2013, Childline in Ahmedabad rescued around 16 children who are working in various parts of the city. Child Labour is an offence in India.
Daughter : Oh! Is it?
Father : Childline helps children who
- are work as labourers.
- are abandoned by their parents.
- are differently abled.
- are live in streets.
Son : How do they exactly know where and how children need help?
Father : Childline number is 1098. One can call on this number and ask for help or inform if they find children who need help.
Son : Oh, I understand now. A child's safety is very important.
Father : Well said, son. There are many laws to protect children.
Daughter : What are they?
Father : We have helplines and laws to support and protect children. But it is very important to teach children of how to be safe ad aware of what's happening around them.
Son : Oh, good to know.
Daughter : What are you going to teach us, Dad?
Father : I will teah you about Safe touch and unsafe touch.
Son : Tell me more about it.
Father : Hugs from family, or high-fives with your friends are all safe touch.
Daughter : What is unsafe touch, dad?
Father : It is unsafe when someone touches your chest, between your legs or lips or asks you to touch theirs.
Son : What about when I am not well and go for a check-up to a doctor?
Father : That's a very good question, dear. Doctors may touch these parts while they are doing a check-up and either me or your mother are in the same room.
Daughter : Okay, dad.
Father : If someone touches you unsafely they might scare you to keep it as a secret. They might get you gifts that you don't tell anyone. But remember dear, you must always inform me or your mother about it.
Son : Yes, I will definitely inform you or mom.
Father : If you are ever touched on any of these parts of your body by someone you know or someone in the family, then you must inform your teacher or another family member.
Son and Daughter : Sure, Dad. We will definitely inform if something like this happens. Thank you for talking to us about this.
Father : Don't thank me because it is every parents' and teachers' duty to talk to children about this. It will help you be safe and happy.
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