DSERT - 8 - Science :: World of sounds

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[Contributor - Bhargavi Keerthana]

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=10SLHMCl2fAOB0x0zKZu4D6zGYqbxwYqM (Lesson Plan - English)

https://drive.google.com/open?id=13CNctMqL9EXdyCaC9h0EuLxMtrsB_fHU (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.

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[Contributor - Anu Nived]

http://ktbs.kar.nic.in/New/website%20textbooks/class8/8th-english-science-2.pdf#page=13 (English Medium)

http://ktbs.kar.nic.in/New/website%20textbooks/class8/8th-kannada-science-2.pdf#page=13 (Kannada Medium)

[Contributor - Bhargavi Keerthana]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=hIOqX4uJtYY (can sound travel without air or other medium)

[Contributor - Bhargavi Keerthana]

Lesson Plan version 1.1 activities

1. Take a thin strip of paper. Hold it near a loud speaker.

Do you see any movement in the paper? What inference can you draw about sound from this activity?

2. Make a list of devices from everyday life that can transform energy involving sound

3. Place one of your hands firmly midway on the throat. Say ‘ahhhh....!’ as long as you can.How does it feel to the hand while you produce the sound?

Now change the kind of sound you produce. Instead of ‘ahhhh...’ you may now say ‘Uhhhhh....’. Make different kinds of sounds-loud, faint, shrill and soft.

Did you feel differences on your hands when you made different sounds?

4. Take a rubber string. Stretch it tightly between two supports. Pluck the string. The string begins to vibrate. Note whether you can hear some sound. Stop the movement of the string. Did the sound also stop?

[Contributor - Bhargavi Keerthana]

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=13CNctMqL9EXdyCaC9h0EuLxMtrsB_fHU

[Contributor - Tirtha M Anwekar]

https://drive.google.com/open?id=1Dr3SX5RvEdOo0dyVHeTZVwQWqfNcuS2v (Question Bank)

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