Students’ Learning Outcomes
· Identify major parts (Skin ) of human body.
· State functions of major parts (Skin) of the body.
Information for Teachers
· The sweat glands in our skin produce sweat to cool our body. Skin also protect our internal parts and act as a sense organ for touch.
· The skin1 is one of the largest organs in the body in surface area and weight. The skin consists of two layers: the epidermis and the dermis. Beneath the dermis lies the hypodermis or subcutaneous fatty tissue. The skin has three main functions: protection, regulation and sensation.
Material/ Resources
Cotton balls, Plant leaves, stones, ice cubes, Polythene bags, Charts of human Skin, textbook
Worm up Activity
· Ask the students if they can name different parts of their bicycle. Write students’ responses on the board.
· Tell the students that as the bicycle has many parts, our body is also made of many parts. These parts are called organs.
· Ask the students to name all the organs of body which they can see and touch. Write students’ responses on board.
· Make them focus that these are the external parts of their body e.g. ear, eye, teeth, and skin.
· Explain that like these external parts there are some parts inside the body which also perform variety of functions.
Development
Activity:
· Let the students recall the lesson about bones. Ask them: Can you see your bones? Why not?
(Expected response: Our skin is covering the bones)
· Organize the students into four groups.
· Arrange four black polythene bags and place the following things in them and number them:
1. Cotton balls 2. Plant leaves 3. Stones 4. Ice cubes
· Inform students that they are to find what is in the bag by using their hands, without looking inside. Distribute the bags to the groups.
· Draw the following table on board and ask the students to copy it on their notebooks and connect the bag number to the object in the other column.
Bag No.
|
Objects
|
1
|
Stones
|
2
|
Ice cubes
|
3
|
Cotton balls
|
4
|
Plant leaves
|
· Discuss their finding and ask the following questions:
1. How did you classify the materials without looking at them?
2. Can you guess which of our five senses helped us to get the answer?
(Expected response: touch)
· Explain that it is just one of the job our skin performs i. e. it keeps away dirt, germs and bad stuff. It also controls our body temperature.
Sum up / Conclusion
The skin protects our internal parts and act as sense organs.
Assessment
· Draw following table on the board.
· Instruct the students how to fill the table.
· They will explain their understanding by completing the table
Diagram
|
Organ name
|
Function
|