DSERT - 7 - Science :: Friction

Lesson Plan
Textbook
Videos
Images
Activities
Additional Aids
Transliteration
Worksheets
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[Contributor - Keerthi deshpande]

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=1aCFMSwOwClt3m70p0pJTHK2QEtYQDG91 (Lesson Plan - English)

https://drive.google.com/open?id=1TqQh9UTprgTXVrmrlUBZwHo1fsp5TU2P (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]

http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-kannada-science-01.pdf#page=36 (Kannada Medium)

http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-english-science-01.pdf#page=36 (English Medium)

[Contributor - Mrinalini Haridas]

https://drive.google.com/file/d/1AOvgxIdmrVp9LlfMN71_iSjrdQi2Ppff/view?usp=sharing (Kannada Medium - Science -01 -2019)

https://drive.google.com/file/d/13eeH14JGkQuPhuKZzI2qO4i_dbbH_Nfj/view?usp=sharing (English Medium - Science - 01 - 2019)

https://drive.google.com/file/d/1dhnzF9X1NL9MsI35YOebjsK1s4mvVeKE/view?usp=sharing (Kannada Medium - Science - 02 - 2019)

[Contributor - Kripa S]

https://www.youtube.com/watch?v=PNDRIicw4E0 (English - Friction)

[Contributor - Keerthi Deshpande]

Lesson plan version 1.1 video

https://www.youtube.com/watch?v=n2gQs1mcZHA (What is friction)

https://www.youtube.com/watch?v=C7NPD9W0kro (Introduction to friction)

https://www.youtube.com/watch?v=bOjgpbZ8VpM (Spring balance)

https://www.youtube.com/watch?v=BHlenjz1FBw (Factors affecting friction)

https://www.youtube.com/watch?v=9SMp-jnh8lg (Static friction)

https://www.youtube.com/watch?v=HRe90ySP38U (Rolling friction)

https://www.youtube.com/watch?v=v95nV6EG7qs (Friction opposes motion)

https://www.youtube.com/watch?v=L4jh6DQc7AU (Friction produces heat)

https://www.youtube.com/watch?v=lYyeZaZKggY (Advantages of friction)

https://www.youtube.com/watch?v=glc4kfK_oKY (Disadvantages of friction)

https://www.youtube.com/watch?v=M0W04bUSvAc

[Contributor - Anu Nived]

http://study.com/cimages/multimages/16/rsz_matches-637771_640.png (friction)

http://www.ekshiksha.org.in/images_friction_VIII/figure_11.JPG (increase friction)

http://image.wistatutor.com/content/feed/tvcs/Image20on20decreasing20and20increasing20friction.JPG (reduce and increase friction)

http://www.mstworkbooks.co.za/natural-sciences/gr9/images/gr9ec01-gd-0032.png (static friction)

[Contributor - Keerthi Deshpande]

https://cdn1.byjus.com/physics/2016/08/05104834/frictional_force.jpg (Frictional force)

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTu2V3v7Vy87SuvZCtg-C3FNVfJnjzudiavb-7xX_WhMH1UnooE-g (Force)

http://unisciencelab.com/wp-content/uploads/2016/06/35-1__54427-1.jpg (Spring balance)

http://www.toondoo.com//public/a/n/g/angelique803/toons/cool-cartoon-2335637.png (Sliding friction)

https://slideplayer.com/slide/6281328/21/images/33/Effects+of+Friction+Friction+causes+wear+and+tear.jpg (Friction causes wear and tear)

http://1.bp.blogspot.com/_wLL4IEx-gB0/SbUVlMTl4aI/AAAAAAAAADY/1T4RTHhEaiM/s400/img3.jpg (Advantages of friction)

https://hi-static.z-dn.net/files/d91/89b9bdccb011516f513d8c8739449f67.jpg (Disadvantages of friction)

[Contributor - Kripa S, Rudrakant Sollapur]

1. Make an inclined plane on a smooth floor, or on a table. You may use a wooden board supported by bricks, or books. Put a mark with a pen at any point on the inclined plane. Now let a pencil cell move down from this point. How far does it move on the table before coming to rest? Note down the distance. Now spread a piece of cloth over the table. Make sure that there are no wrinkles in the cloth. Try the activity again.

2. http://www.arvindguptatoys.com/toys/books.html (tug of war activity)

3. https://drive.google.com/open?id=0BzNF2YyqQxJ-V1NiR2pENFpkWnM

[Contributor - Keerthi Deshpande]

Lesson Plan version 1.1 activities

1. Try sliding a wooden block kept on a rough flat table as shown in the figure3.2.(page no 29) Push the block with a small horizontal force, it does not move. Can you say that there is another horizontal force opposing the applied force?.

2. Take an empty box, tie a string around it and pull the box slowly on a smooth surface of a floor. Do you feel any friction? Try pulling the same box on the different surfaces over the floor, such as a thick sheet of cloth, a sheet of coir mat, a sheet of rubber, a sheet of greasy paper and finally on a sand bed. What change do you observe in the magnitude of friction?.

Repeat the same activity using the heavily filled box. Observe the difference. Note down the reason for the differences.

3. Ask children to push a big heavy box on the floor. They might find difficult to push that box. Ask them to find out reason behind this.

4. Ask children to hold a pencil between their palms and ask them to rub. After sometime ask them to repeat the activity without holding the pencil between their palms. Ask them to note down the difference.

[Contributor - Rudrakant Sollapur]

https://drive.google.com/open?id=0BzNF2YyqQxJ-VUxtVUdva0oyUU0

[Contributor - Keerthi Deshpande]

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=1TqQh9UTprgTXVrmrlUBZwHo1fsp5TU2P

[Contributor - Apoorva Ramachandra]

Term	Transliterated Term	Translated Term
Friction	ಫ್ರಿಕ್ಷನ್	ಘರ್ಷಣೆ
Frictional Force	ಫ್ರಿಕ್ಷನಲ್ ಫೋರ್ಸ್	ಘರ್ಷಣಾ ಬಲ
Static Friction	ಸ್ಟಾಟಿಕ್ ಫ್ರಿಕ್ಷನ್	ಸ್ಥಾಯಿ ಘರ್ಷಣೆ
Rolling Friction	ರೋಲಿಂಗ್ ಫ್ರಿಕ್ಷನ್	ಉರುಳು ಘರ್ಷಣೆ
Sliding Friction	ಸ್ಲೈಡಿಂಗ್ ಫ್ರಿಕ್ಷನ್	ಜಾರು ಘರ್ಷಣೆ
Motion	ಮೋಷನ್	ಚಲನೆ
Lubricant	ಲೂಬ್ರಿಕೆಂಟ್	ನುಣುಪುಕಾರಕ / ಹೆರೆ