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Sunday, 1 December 2013

Model Lessonplan Biological Science


LESSON PLAN


Name of the student teacher: S.T. Sajith lal raj
Name of the school              :
Standard                               : IX
Division                                : C
Subject                                  : Science
Topic                                     : Parts of flower
Duration                                : 45
Date                                       :
  
General Instructional objectives:   
The pupil,
1.      acquires knowledge about parts of a flower.
2.      understands different parts of a flower anf their unctions.
3.      applies the knowledge in relevant situations.
4.      develops skill in drawing and observation.
5.      develops interest in the study of palnts.

Specific Instructional objectives:
The pupil,
1.      recalls the different parts of a plant.
2.      lists the different parts of a flower.
3.      observes different parts of a flower.
4.      recognizes about calyz.
5.      identifies about corolla.
6.      relates the different parts of flower.
7.      infers the different parts of flower.

Teaching Aids:
1.      chart showing different parts of a flower.
2.      real specimen(flower)
3.      model of gynoecium.

Previous knowledge:
            Pupils have some general idea about different parts of a plant.



Steps
Specification
Learning Experience
Time
Evaluation
Intro duction










      






Presen tation

Demonstration
     







Explanation

Pupil recalls the different parts of plant





























Pupil lists the different parts of a flower.




Teacher motivates the class by asking following questions and eliciting answers.
1. Which part of the plant is seen below the soil?
Root system
2. Which part of the plant is seen above the soil?
Shoot system
3. Which is an attractive part of the plant?
Flower
  Today we are going to study about different parts of a flower. Through questioning pupil’s previous knowledge is tested.



The teacher demonstrates the flower of hibiscus and explains the students to understand the various parts of a flower.
Parts of a flower [B.B]
      Teacher explains the different parts of flower and the pupil listen

Flower is considered as a condensed modified reproductive shoot. The various parts of flowers are calyx, corolla, androecium, gynoecium. Let us see one by one












 5 min










10 min










15 min
































Which part is called the reproductive part of the plant?








Steps
Specification
Learning Experience
Time
Evaluation






























Pupil recognizes about calyx



















Pupil recognizes about corolla

Calyx[B.B]
       The individual unit of a calyx is called sepals. A sepal is usually green and leaf like. Calyx protects the floral parts of the bud stage, and is the first whorl of the flower. Sometimes it may be modified to do other functions. In mussaenda one of the sepals grows out as a large petal like structure. Calyx is said to be polysepalous and when they are united it is called as gamosepalous.

Teacher makes the pupils to observe the chart and specimen.

1. What is the first whorl of the flower?
calyx
2. What is the name of calyx, if the sepals are free?          
Polysepalous

Corolla
Teacher explains the corolla by using the real specimen.
   Corolla is the second whorl of a flower. It is composed of petals. They are brightly coloured and it attracts the insects for cross pollination. If all the petals are similar in size and shape, it said to be regular. If they are vary in size and shape they are called as irregular. When the petals are free, they are called polypetalous and when they are united they are called as gamopetalous.
1. Name the second whorl of the flower?
Corolla
2. What is called polypetalous?
    If the petals are free, they are called polypetalous.





Where the calyx is found in the flower?







What is called sepals?













How many wing petals are present in the lateral side?

Steps
Specification
Learning Experience
Time
Evaluation
.























     
.  






Pupil identifies polypetalous irregular corolla.











Pupils recognizes about androecium

3. What is called gamopetalous?
     If the petals are united they are called as gamopetalous.

Papilionaceous corolla is an example for polypetalous. There are five petals resembling a butterfly. The posterior petal is large and outermost one is called the standard petal. There are two lateral tiny petals and two anterior united keel petals eg crotalarious.

Teacher displays a chart with the picture of petals. Teacher asks the students to point out the corolla by using the chart and specimens.

Androecium[B.B]
    Androecium or the male part is the third whorl of the flower and it consists of stamens or microsporophylls. Each stamen has a basal stalk, the filament and anther lobes at its top. It is connected by means of a special tissue called connective

Teacher explains Androecium by using chart and specimen.

1. What is the third whorl of the flower?
Androecium
2. What is the name of special tissue present in the top of the Androecium?
Connective tissue























Where the microsporophyll is present?





Steps
Specification
Learning Experience
Time
Evaluation










Application

















Re view:
          








Assignment
       

Pupil identifies about Gynoecium





Pupil relates the different parts of flower





  









Pupil recalls about the different parts of flower

Gynoecium[B.B]
     Gynoecium or pistil forms the fourth what of the flower and it is female part of the flower. It has a swollen base called ovary and a slender style that ends in stigma.        

Teacher explains gynoecium by using the model and specimens.

Teacher gives different types of flowers and ask them to find out the different parts of those flowers.
a. The individual unit of calyx is called …………..
Ans: Sepal
b. ……………… is an example for polypetalous irregular corolla.
Ans: Papilinaceous corolla
c. ………… is called male part of the flower.
Ans: Androecium
d. ……………is the female part of the flower.
Ans : Gynoecium
e. …………part attract insects for crosspollination.
Ans: Corolla

1. Which part is called reproductive part of the plant?
2. What is the first whorl of the flower?
3. What is the name of calyx, if the sepals are free?          
4. What is called sepals?
5. What is the second whorl of the flower?
6. What is called polypetalous?

1. Describe the different parts of a flower with the help of neat labeled diagram.
2. Collect some flowers from the school campus














5

















5

Where is the Gynoecium present?






Where the stigma is present in Lilly flower?
Where the calyx is present in the Rose flower?
Where the stalk is present in the Lotus flower?




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