NAME OF THE TEACHER TRAINEE (Autosaved).pdf

7/24/2019 NAME OF THE TEACHER TRAINEE (Autosaved).pdf

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INNOVATIVE LESSON PLAN

NAME OF THE TEACHER TRAINEE: DEEPIKA RAJ C STANDARD: IX

NAME OF THE SCHOOL : STRENGTH:

SUBJECT : CHEMISTRY DURATION: 45

UNIT : PERIODIC TABLE AND CHEMICAL BONDING AGE : 14+

TOPIC : HALOGEN FAMILY DATE :

CURRICULAR STATEMENT

Pupil develops an understanding of the concept halogen family through experimentation, observation and

discussion, and develops an ability to use the acquired knowledge in unfamiliar situations.

CONTENT ANALYSIS

TERM : Halogens

FACTS : 1. Halogens are 17th

group elements

2. The valency of halogens is +1

3. There are 7 electrons in the valence shell of halogens

4. All halogens are non metals except astatine

5. Astatine is a metalloid


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CONCEPT: Halogens are the 17th

group elements in the periodic table

LEARNING OUTCOME

To enable the pupil to..

1. recognizing the term halogens and memorizing the same for developing factual

knowledge.

2. explaining characters of halogens for developing conceptual knowledge

3. conducting practical works on the technique of drawing atomic structure of elements for

developing procedural knowledge.4. validating the process of acquiring knowledge about halogens for developing meta-

cognitive knowledge.

PRE-REQUISITES

Pupils already knows about valency and atomic structure

TEACHING LEARNING RESOURCES

MATERIALS: Riddle card, crossword puzzle card, story card

A-V AIDS : Laptop (PPT on atomic structure of halogens)


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CLASSROOM INTERACTION PROCEDURE EXPECTED PUPIL RESPONSE

INTRODUCTION

Teacher shows a slide of periodic table

PPT ON PERIODIC

TABLE

1. Do you clean well water?

2.

What do you used to clean the water?

3. What is the main component in this bleaching powder?

4. In which group this chlorine is included in the periodic table?

5. What is the criterion behind the arrangement of elements in

groups ?

Teacher starts the lesson by saying that through this class we are

going to discuss about the 17th

group elements in the periodic

table

PRESENTATION

Teacher divides the whole students in to four groups, name them

as Mendeleev, Mosley, Newland, Lavosiere and ask them to

perform the following activities.

Yes

Bleaching powder

Chlorine

Dont know

Same no. of valence electrons

Pupils form groups.


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ACTIVITY NO: 1

Teacher asks the students to solve the riddle and to complete thecrossword puzzle.

4

1

2

3

5

1. Fluorine

2. Chlorine

3. Bromine

4. Iodine

5. Astatine


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RIDDLE CARD

1.

I am the first member of halogen family. I am in FLATnot in CAT, in OX not in FAX, in CUP not in CAP, in

RING not in SANG, in MINE not in MILK.

2. I am the second member of this family. I am in CHIP

not in LIP, in LOVE not in FIVE, in RING not in SANG,

in MINE not in MILK

3. I am the third member. I am in BRAIN not in MAIN, in

OX not in FAX, in MILK not in SILK, in ink not in Tank,

in MINE not in MILK.4. I am the fourth member. I am in LION not in LAN, in

DOG not in FOG, in MINE not in MILK.

5. I am the fifth member. I am in ASK not in DUCK, in

TANK not in PINK, in TIN not in TINY, in EGG not in

FOGG.

CONCEPTS TO BE CONSOLIDATED

The elements of halogen family are Fluorine, Chlorine,

Bromine, Iodine, Astatine

ACTIVITY NO: 2

Teacher give four story card to each group in which some letters

are highlighted. In each card a meaningful sentence is hidden.

Teacher asks students to arrange them and to form a meaningful

sentence.


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The Rabbit and the Turtle

One day a rabbit was boasting about how fast he could

run. He was laughing at the turtle for being so slow.

Much to the rabbits surprise, the turtle challenged him

to a race. The rabbit thought this was a good joke and

accepted the challenge. The fox was to be the umpire of

the race. As the race began, the rabbit raced way ahead

of the turtle, just like everyone thought.

The rabbit got to the halfway point and could not see

the turtle anywhere. He was hot and tired and decided to

stop and take a short nap. Even if the turtle passed him,

he would be able to race to the finish line ahead of him.

All this time the turtle kept walking step by step by


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step. He never quit no matter how hot or tired he got.He just kept going.

However, the rabbit slept longer than he had thought

and woke up. He could not see the turtle anywhere! He

went at full-speed to the finish line but found the turtle

there waiting for him.

Moral: never underestimate the weakest opponent





The group number is seventeen


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the race. As the race began, the rabbit raced way aheadof the turtle, just like everyone thought.

The rabbit got to the halfway point and could not see the

turtle anywhere. He was hot and tired and decided to



All this time the turtle kept walking step by step by step.

He never quit no matter how hot or tired he got. He justkept going.

However, the rabbit slept longer than he had thought

and woke up. He could not see the turtle anywhere! He

went at full-speed to the finish line but found the turtle

there waiting for him.

Moral: never underestimate the weakest opponent. All are non metals but not astatine


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the race. As the race began, the rabbit raced way ahead

of the turtle, just like everyone thought.


turtle anywhere. He was hot and tired and decided to



All this time the turtle kept walking step by step by step.

He never quit no matter how hot or tired he got. He just


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kept going.

However, the rabbit slept longer than he had thought andwoke up. He could not see the turtle anywhere! He went

at full-speed to the finish line but found the turtle there

waiting for him.

Moral: never underestimate the weakest opponent.

So children you never underestimate other opponents.

.




There are seven valence electrons


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Much to the rabbits surprise, the turtle challenged him to

a race. The rabbit thought this was a good joke and

accepted the challenge. The fox was to be the umpire ofthe race. As the race began, the rabbit raced way ahead of

the turtle, just like everyone thought.


turtle anywhere. He was hot and tired and decided to stop

and take a short nap. Even if the turtle passed him, he

would be able to race to the finish line ahead of him. All

this time the turtle kept walking step by step by step. Henever quit no matter how hot or tired he got. He just kept

going.

However, the rabbit slept longer than he had thought and

woke up. He could not see the turtle anywhere! He went

at full-speed to the finish line but found the turtle there

waiting for him.

Moral: never underestimate the weakest opponents

One is the valency of elements


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CONCEPTS TO BE CONSOLIDATED

The group number of halogen family is seventeen. All

elements are non metals except astatine. There areseven valence electrons in the atoms of halogens. So

one is the valency of elements

ACTIVITY NO: 3

Teacher gives thermo coal rings to each group and ask

them to make atomic structure of chlorine, bromine and

fluorine.


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FOLLOW UP ACTIVITIES

REVIEW

1. What are the characters of halogens?

2. Name the elements in halogen family?

ENRICHMENT ACTIVITYDraw the atomic structures of iodine and astatine?

GENERALISATION

From the above activities it is understood that halogensare the seventeenth group elements. The elements of this

group have seven electrons in their outermost shell. So

their valency is 1. All the elements are non metals except

astatine.


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C.B WORK

CHEMISTRY STD:

HALOGEN FAMILY STR:

ELEMENTS ATOMIC NUMBER VALENCY

Fluorine 9 1chlorine 17 1

bromine 35 1

iodine 53 1

astatine 85 1

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NAME OF THE TEACHER TRAINEE (Autosaved).pdf