DSERT - 8 - Science :: The world of microbes

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Go To: DSERT-Science-Grade 8

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[Contributor - Ankita Srivastava]


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=1vkS2QC6p8s5bjBrxPSb-QuM6nwJAxyv9(English)


https://drive.google.com/open?id=1drfPcPypox9ddd_MmSEkxvi53CVtQVSi(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 -Ankita Srivastava]

Lesson Plan versions 1.1 Videos

https://www.youtube.com/watch?v=Bw9jDvKvw3c

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRHKb0bkNzBA3GSXrYzFUhqe58R443g6PKknOYS06IkiM1hjeKA

https://www.youtube.com/watch?v=CE2lnMorlqo (Short movie on life of louis pasteur and his discoveries)

https://www.youtube.com/watch?v=Xc-hHhDID9A (Swan neck flask experiment)

https://www.youtube.com/watch?v=6p9e0oolbmE (shapes of baceteria and its motion upto 1:20 min)

https://www.youtube.com/watch?v=8B5rrwozQ3A (Different bacterial shapes , upto 1:16min)

https://www.youtube.com/watch?v=4DYgGA9jdlE (baceterial Structure)

https://www.youtube.com/watch?v=7KXHwhTghWI (introduction of virus upto 3:28min)

https://www.youtube.com/watch?v=YI3tsmFsrOg (Introduction to bacteriophages , upto 2:30 min)

https://www.youtube.com/watch?v=d_nKNmN-IeA (Structure of Bacteriphages)

https://www.youtube.com/watch?v=i9L-RoQ1frc (Bacetriophages how it works)

https://www.youtube.com/watch?v=B1CFVuQVG2U (Introduction to protozoa)

https://www.youtube.com/watch?v=7pR7TNzJ_pA (movement of amoeba under miroscope)

https://www.youtube.com/watch?v=EMNFZnDt75c

https://www.youtube.com/watch?v=sBI4n1m36pA

(Movement of chlamydomonas)

https://www.youtube.com/watch?v=lzNavc3F8Vo (Different types of fungi under microscope)

https://www.youtube.com/watch?v=Uf8a7cCVjM4 (Culturing microorganisms in labs)

https://www.youtube.com/watch?v=rydQVvo8rM0 (growing bacteria in liquid culture media)


[Contributor - Ankita Srivastava]

Lesson Plan version 1.1 Activities

1. Collect pond water in a small clean glass bottle. Place a drop of water on a clean slide. Place a cover slip and observe under microscope.

OR


If the above activity can’t be performed, please show this video to children of an experiment showing microorganisms in pond water under microscope-

https://www.youtube.com/watch?v=mXqyCNAYrH4


2. Take a small amount of curd. Put a drop of curd on a clean microscope slide. Spread the curd drop evenly and prepare a thin smear. Dry the smear by heat fixation by passing the slide 5-6 times over spirit lamp. Add Methylene blue stain on the curd smear and leave it for 1 min. Remove excess of stain by washing the slide with water. Observe under microscope. If the above activity can’t be performed, show this video demonstrating a similar experiment-

https://www.youtube.com/watch?v=NSFDKKg3BZY (

3. Take a thin slice of bread/chapati. Sprinkle a few drops of water on it. Cover it with a plastic bag. Observe the changes after 3 days.

4. Make a suspension of yeast using yeast powder and water. Take a drop of suspension and prepare a smear on a microscopic slide.Stain the smear with methylene blue or safranin stain. Observe the slide under a compound microscope and record the result. or

Similar experiment of yeast cells under microscope can be shown-

https://www.youtube.com/watch?v=OoYn7FH3Z3U


[Contributor - Ankita Srivastava]

Lesson plan version 1.1 PPT

https://drive.google.com/open?id=1drfPcPypox9ddd_MmSEkxvi53CVtQVSi(PPT - English)


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