TNSB - 7 - Science :: Food habits of Plants and Animals

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Go To: TNSB-Science-Grade 7

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[Contributor - Sumathi]


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=14amsqVKB-7hJEvhOWJN1m7PG2SkpS0Pj (Lesson Plan - English)


https://drive.google.com/open?id=1F5umCdHWpglQkfF2yGHVgJZGaFzgNA7_ (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]


1. Ask the students to identify the different types of teeth in their mouth.

2. . Prepare a separate sample each of (i) sugar solution, (ii) common salt solution, (iii) lemon juice and (iv) juice of crushed neem leaf or bitter gourd. Blindfold one of your classmates and ask her/him to take out the tongue and keep it in straight and flat position. Use a clean toothpick to

put the above samples one by one on different areas of the tongue as shown in Fig. 2.6. Use a new toothpick for each sample. Ask the classmate which areas of the tongue could detect the sweet, salty, sour and bitter substances. (Textbook activity)


[Contributor - Sumathi]

Lesson plan version 1.1 activities

1. When the weather is sunny, let us put a steel bowl on a patch of grass. Leave the bowl for 5 days. No peeking! Lift the bowl and look at the grass. How is it different from the grass exposed to sunlight?

2. Let us take a piece of bread. Moisten it and leave it for a few days. We can see the cotton like mass growing on it. What is it?

3. To demonstrate peristalsis. 1. Take a rubber tube and wet it inside. 2. The tube represents the food pipe. 3. Put many marbles into the tube. 4. The marbles represent food. 5. Squeeze the rubber tube from the top with your hand in a forward direction. 6. You can observe a kind of wave-like motion in the rubber tube. 7. This movement represents peristalsis.

4. Let us take any fruit. Enjoy eating it. Now find out.

Function Teeth

Biting  

Tearing and cutting

Chewing and grinding 

5. From the given list of animals, shall we find out the ruminants and the non-ruminants: Bison, deer, horse, camel, rabbit, and donkey.


[Contributor - Gayathri Arun]

Term Transliterated Term Translated Term
organism                                            ஆர்கனிசம்                                                உயிரி
source                                                 சோர்ஸ்                                                  மூலம், பிறப்பிடம், வாயில்
enzymes                                                என்சைம்                                                  நொதி
stagnant                                            ஸ்டாஞன்ட்                                                தேங்கிய
ferment                                            ஃபெர்மென்ட்                                              கொந்தளிப்பா, நொதி
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