Difference between revisions of "DSERT - 7 - Science :: Hard water and Soft water"

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=Lesson Plan=
 
=Lesson Plan=
  
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[Author - Anu Nived]
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[Contributor - SHILP G s]
  
  
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'''Objective:''' To teach the students about hard water/soft water
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Dear Volunteer,
  
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'''Subtopics to be covered:'''
 
  
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- Methods to soften hard water
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Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.
  
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- Heavy water
 
  
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- Types of hydrogen atom
 
  
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'''Learning Outcome:'''
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'''https://drive.google.com/open?id=1Ss3Uw7x9wzMo5mA6ZNCKUSfBurd8fU17''' (Lesson Plan - English)
  
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- Students know about the difference between hard and soft water
 
  
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- They know about the disadvantages of hard/heavy water
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'''https://drive.google.com/open?id=1mMn3ZRKv_kEmnz0UFl5PS1UDHjX6Uq11''' (PPT - English)
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You may use the content as it is or download and modify them to suit the students requirements.
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 +
 
 +
 
 +
If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.
 +
 
 +
 
 +
 
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The worksheets of the lesson can be accessed from the worksheet tab.
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 +
 
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Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.
  
  
 
=Textbook=
 
=Textbook=
  
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[Author - Kripa S]
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[Contributor - Kripa S]
  
  
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http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-english-science-01.pdf#page=137 (English Medium)
 
http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-english-science-01.pdf#page=137 (English Medium)
  
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[Contributor - Mrinalini Haridas]
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https://drive.google.com/file/d/1AOvgxIdmrVp9LlfMN71_iSjrdQi2Ppff/view?usp=sharing (Kannada Medium - Science -01 -2019)
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https://drive.google.com/file/d/13eeH14JGkQuPhuKZzI2qO4i_dbbH_Nfj/view?usp=sharing (English Medium - Science - 01 - 2019)
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https://drive.google.com/file/d/1dhnzF9X1NL9MsI35YOebjsK1s4mvVeKE/view?usp=sharing (Kannada Medium - Science - 02 - 2019)
  
 
=Videos=
 
=Videos=
  
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[Author - Kripa S]
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[Contributor - Kripa S]
  
  
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https://youtu.be/w7tUZIVz5LE (Turn hard water soft - English)
 
https://youtu.be/w7tUZIVz5LE (Turn hard water soft - English)
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[Contributor - Shilpa G S]
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Lesson Plan version 1.1 videos
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https://www.youtube.com/watch?v=ocP14X0Hvro
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https://www.youtube.com/watch?v=FmTlFmMakhA
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https://www.youtube.com/watch?v=XYZ147j3r0E (hard water and soft water)
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https://www.youtube.com/watch?v=BmpknJNDXfE (ion exchange process)
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https://www.youtube.com/watch?v=W5teyd8srp8
  
  
 
=Images=
 
=Images=
  
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[Author - Anu Nived]
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[Contributor - Anu Nived]
  
  
 
http://www.goldwatergroup.ca/wp-content/uploads/2016/10/eagle-water-treatment-hard-water.jpg (effects of hard water)
 
http://www.goldwatergroup.ca/wp-content/uploads/2016/10/eagle-water-treatment-hard-water.jpg (effects of hard water)
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[Contributor - Shilpa G S]
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Lesson Plan version 1.1 images
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http://rehabit.at/wp-content/uploads/2014/04/Hard-water-stains-in-toilet-before-cleaning.jpg
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https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQBgWdPE2fkMV0TA8jDYo67X8vkVqaRJRZLyO6VQLMIIODJx8HyQg
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https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRWU83Tv4t_bUw6AWTlMcYQTPJZDMHYY84v0Vz8w4O63eaCIInJ
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http://mathscinotes.files.wordpress.com/2014/02/c0027879-heavy_water-spl.jpg?resize=525%2C530
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=Activities=
 
=Activities=
  
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[Author - Kripa S, Nandini N]
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[Contributor - Kripa S, Nandini N]
  
  
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3. https://drive.google.com/open?id=0BzNF2YyqQxJ-RHV1NTBmbkdkbE0
 
3. https://drive.google.com/open?id=0BzNF2YyqQxJ-RHV1NTBmbkdkbE0
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[Contributor - Shipla G S]
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Lesson plan version 1.1 activities
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1. Make the students in to groups and ask them to collect different kinds of water available in their locality ,during rainy season ask them to collect rain water as well and test the yield of latter with soap to test the type of water
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2. Take 20 ml of hard water in a beaker. Add a spoon of sodium carbonate to it. What do you observe? An insoluble precipitate is formed.
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This precipitate is either calcium carbonate or magnesium carbonate depending on the salt present in the hard water sample taken. Remove the precipitate by filtration. The water, so obtained is soft.
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To further test this water, pour some soap solution in it and shake well. Does it lather? Yes, it does, showing that the water is soft
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=Additional Aids=
 
=Additional Aids=
  
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[Author - Nandini N]
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[Contributor - Nandini N]
  
  
 
https://drive.google.com/open?id=0BzNF2YyqQxJ-M0Y2alB4VU9rS1k
 
https://drive.google.com/open?id=0BzNF2YyqQxJ-M0Y2alB4VU9rS1k
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[Contributor - Shilpa G S]
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Lesson plan version 1.1 PPT
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https://drive.google.com/open?id=1mMn3ZRKv_kEmnz0UFl5PS1UDHjX6Uq11
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=Transliteration=
 
=Transliteration=
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[Author - Apoorva Ramachandra]
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[Contributor - Apoorva Ramachandra]
 
{| class="wikitable"  
 
{| class="wikitable"  
 
|'''Term''' || '''Transliterated Term''' || '''Translated Term'''||
 
|'''Term''' || '''Transliterated Term''' || '''Translated Term'''||
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=Worksheets=
 
=Worksheets=
  
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[Author - Nandini N]
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[Contributor - Nandini N]
  
  
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=Assessments=
 
=Assessments=
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[Contributor - Namrata Raman]
  
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https://drive.google.com/open?id=1KOG6LElOHBGUM7I8aN7D82rRIDhdZp-E (Question Bank)
 
<headertabs/>
 
<headertabs/>
 
<vote type=1 />
 
<vote type=1 />
 
<comments/>
 
<comments/>

Latest revision as of 06:04, 26 June 2019

Go To: DSERT-Science-Grade 7

[edit]

[Contributor - SHILP G s]


Dear Volunteer,


Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.


https://drive.google.com/open?id=1Ss3Uw7x9wzMo5mA6ZNCKUSfBurd8fU17 (Lesson Plan - English)


https://drive.google.com/open?id=1mMn3ZRKv_kEmnz0UFl5PS1UDHjX6Uq11 (PPT - English)


You may use the content as it is or download and modify them to suit the students requirements.


If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.


The worksheets of the lesson can be accessed from the worksheet tab.


Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.


[Contributor - Kripa S]


https://www.youtube.com/watch?v=ebygQes5Wig (Hard and soft water - English)

https://youtu.be/w7tUZIVz5LE (Turn hard water soft - English)


[Contributor - Shilpa G S]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=ocP14X0Hvro

https://www.youtube.com/watch?v=FmTlFmMakhA

https://www.youtube.com/watch?v=XYZ147j3r0E (hard water and soft water)

https://www.youtube.com/watch?v=BmpknJNDXfE (ion exchange process)

https://www.youtube.com/watch?v=W5teyd8srp8


[Contributor - Kripa S, Nandini N]


1. Take two glasses of water. Add salt in one glass and mix well. Now add one pinch of soap powder in both the glasses of water. You will observe that the soap dissolves faster in the water without salt (soft water), but takes more time to dissolve in salt water (hard water)

2. When you store hard water in a vessel, you will see salt sediments in the vessel after water evaporates. Observe at home and share your points.

3. https://drive.google.com/open?id=0BzNF2YyqQxJ-RHV1NTBmbkdkbE0

[Contributor - Shipla G S]

Lesson plan version 1.1 activities

1. Make the students in to groups and ask them to collect different kinds of water available in their locality ,during rainy season ask them to collect rain water as well and test the yield of latter with soap to test the type of water


2. Take 20 ml of hard water in a beaker. Add a spoon of sodium carbonate to it. What do you observe? An insoluble precipitate is formed.

This precipitate is either calcium carbonate or magnesium carbonate depending on the salt present in the hard water sample taken. Remove the precipitate by filtration. The water, so obtained is soft.

To further test this water, pour some soap solution in it and shake well. Does it lather? Yes, it does, showing that the water is soft


[Contributor - Apoorva Ramachandra]

Term Transliterated Term Translated Term
Salts ಸಾಲ್ಟ್ಸ್ ಲವಣಗಳು
Disadvantage ಡಿಸ್ಅಡ್ವಾಂಟೇಜ್ ಅನಾನುಕೂಲ
Physical Property ಫಿಸಿಕಲ್ ಪ್ರಾಪರ್ಟಿ ಭೌತಿಕ ಲಕ್ಷಣ
Heavy water ಹೆವಿ ವಾಟರ್ ಭಾರ ಜಲ
Hard water ಹಾರ್ಡ್ ವಾಟರ್ ಗಡಸು ನೀರು
Soft water ಸಾಫ್ಟ್ ವಾಟರ್ ಮೆದು ನೀರು
Solvent ಸೋಲ್ವೆನ್ಟ್ ದ್ರಾವಕ
Universal ಯೂನಿವರ್ಸಲ್ ಸಾರ್ವತ್ರಿಕ
Scaling ಸ್ಕೇಲಿಂಗ್ ಸ್ತರಿಗೊಳಿಸುವಿಕೆ
Temporary ಟೆಂಪೊರರಿ ತಾತ್ಕಾಲಿಕ
Permanent ಪರ್ಮನೆಂಟ್ ಶಾಶ್ವತ
Boiling ಬೋಯ್ಲಿಂಗ್ ಕುದಿಸುವುದು
Ion Exchange ಅಯಾನ್ ಎಕ್ಸ್ಚೇಂಜ್ ಅಯಾನು ವಿನಿಮಯ
Discovery ಡಿಸ್ಕವರಿ ಸಂಶೋಧನೆ

[Contributor - Namrata Raman]

https://drive.google.com/open?id=1KOG6LElOHBGUM7I8aN7D82rRIDhdZp-E (Question Bank)

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