Skill of Probing Questions

Lesson Plan

Topic: Skin

Class: 9^th Standard

Subject: Science

Teacher : Good Morning, Students

Pupil : Good Morning, Teacher

Teacher : Children, why is the skin essential for us?

Pupil : The skin is highly essential to protect internal organs and to prevent the entry of pathogens into the body.

Teacher : What are the three layers of tissues in the skin?

Pupil : The skin is divided into three layers of tissues: 1. Epidermis 2. Dermis

Teacher : Third layer? (Seeking further information)

Pupil : 3. Hypodermis

Teacher : Good. Which one is the upper layer of the skin?

Pupil : Epidermis is the upper layer of the skin.

Teacher : What does the outermost layer consists of? (Prompting)

Pupil : The outermost layer consists of flat, thin and scale - like dead cells.

Teacher : Very good. How is the outer layer separated from the dermis? (Critical Awareness)

Pupil : Outer layer is separated from the dermis by the basement membrane.

Teacher : What does the epidermis contains?

Pupil : The epidermis contains melanocytes.

Teacher : Which cell gives colour to the skin? (Prompting)

Pupil : Melanocytes gives colour to the skin

Teacher : If there is no melanocyte, what will happen? (Redirection and Critical Awareness)

Pupil : Skin will not have colour

Teacher : What does the deepest layer of epidermis have? (Prompting)

Pupil : The deepest layers of epidermis have nerve endings.

Teacher : Name the layer that is seen in the middle

Pupil : The dermis is the middle layer

Teacher : Which layer is thick and elastic? (Prompting)

Pupil : Dermis, the middle layer is thick and elastic

Teacher : What does the dermis consists of?

Pupil : The dermis consists of nerves, blood vessels, hair follicles.

Teacher : Any other? (Seeking further information)

Pupil : Sweat glands and sebaceous glands (oil glands).

Teacher : Name the two glands that are seen in the dermis

Pupil : The two glands that is seen in the dermis sweat glands and sebaceous glands (oil glands).

Teacher : Which gland separates sweat from the blood? (Critical Awareness)

Pupil : Sweat glands separate sweat from the blood.

Teacher : How do sweat glands help us? (Prompting)

Pupil : Sweat glands help us in thermoregulation, by cooling the surface of the skin to maintain body temperature.

Teacher : What does the sweat gland excrete?

Pupil : It excretes excess water and dissolved salts from the body.

Teacher : How do the sweat glands protect us? (Prompting)

Pupil : The sweat glands protect us from colonization by bacteria and entry of pathogens through the skin surface.

Teacher : Why does our skin is smooth and shiny? (Redirection and Critical Awareness)

Pupil : Our skin is smooth and shiny, because of the secretion of Sebaceous glands

Teacher : If there is no Sebaceous glands in our body what will happen? (Critical Awareness)

Pupil : Our skin won’t be smooth and shiny

Teacher : What is arrector pili and why it is necessary?

Pupil : The arrector pili are the smooth muscle and it is necessary to move the hair.

Teacher : Which one is the innermost layer of the skin?

Pupil : Hypodermis is the innermost layer of the skin.

Teacher : What does it contains?

Pupil : It contains large amounts of adipose tissue.

Teacher : Does it contain anything else? (Seeking further information)

Pupil : No response.

Teacher : What did the adipose tissue stores?

Pupil : The adipose tissue stores fat.

Teacher : Mention the function of adipose tissue.

Pupil : It stores fat and reserves energy. And it provides the body with insulation.

Teacher : Good. Which tissue provides insulation to the body? (Prompting)

Pupil : Adipose tissue provides insulation to the body.

Teacher : Can you compare the middle layer and innermost layer? (Refocusing)

Pupil : Middle layer Innermost layer

Thick but elastic Thick

Contains glands Contains tissue

Help in thermoregulation Provides the body with insulation

Teacher : Very good. Name the vitamin prepared by the skin.

Pupil : The vitamin prepared by the skin is Vitamin D

Teacher : Can you summarize the functions of skin? (Refocusing)

Pupil : 1. The skin protects the internal organs of our body.

2. It prevents the entry of infectious agents.

3. It reduces water loss.

Teacher : Very good. Can you list out some more functions? (Seeking further information)

Pupil : 1. The skin regulates the body temperature.

2. The skin can prepare Vitamin D with the help of sunlight.

3. It helps us to feel touch, pain and temperature.

4. The skin acts as an excretory organ and excretes sweat.

Teacher : Very good. Today, we have learnt about the skin. Thank you, students.

Pupil : Thank you, Madam.