Students’ Learning Outcomes
· Identify major parts (Skin ) of human body.
· State functions of major parts (Skin) of the body.
Information for Teachers
· Skin is the largest body part. We have hair on our skin, which act as barrier of heat.· 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
|
Follow up
· Ask each student to choose one of the organs taught in this lesson. All students will make drawings of the chosen organs. They will also write the function of the organ.
