BY:NOOR ZANARRIYAH MOHD GANI D20091034827SARAH SABILLAH IBRAHIM D20091034820SITI SHAHIDA MOHD AZIRI D20091034836ZAINAB FASIHAH MUHAMAD SUKARDI D20091034842

• Arteries carry oxygenated blood and veins carry deoxygenated blood.

• Blood travels in one continuous loop around the bodies

• Blood circulation only involves the organ of heart

• Site of gas exchange occur in the heart; not the lung

• Arteries carry oxygenated blood and veins carry deoxygenated blood.

• Blood travels in one continuous loop around the bodies

• Blood circulation only involves the organ of heart

• Site of gas exchange occur in the heart; not the lung

Scientific method

The main features of animal circulatory system is blood, vessel

and heart

Heart

• have four chambers which keeps oxygenated and deoxygenated separate. This makes oxygen exchange more efficient.

• Blood circulation ~Superior and interior venacave right atrium right ventricle pulmonary arteries lungs pulmonary veins left atrium left ventricle aorta

Scientific explanationScientific

explanationArteries do carry oxygenated blood EXCEPT for

PULMONARY ARTERY which carry deoxgenated blood from heart to lungs to undergoes gaseous exchange

process

Veins do carry deoxygenated blood EXCEPT for PULMONARY VEIN which carry oxygenated blood from

lungs to heart (left atrium)

Arteries do carry oxygenated blood EXCEPT for PULMONARY ARTERY which carry deoxgenated blood from heart to lungs to undergoes gaseous exchange

process

Veins do carry deoxygenated blood EXCEPT for PULMONARY VEIN which carry oxygenated blood from

lungs to heart (left atrium)

It is better to remember that arteries carry blood awayfrom the heart and veins carry blood to the heart

Alternative Conception&

Techniques To Elicit Student Ideas• AC : Arteries carry oxygenated blood and veins carry

deoxygenated blood.

• Technique : Drawing with description Ask the student to draw the diagram of

heart and labelled each of the component of the heart.

Once labelled, describe each of the component of heart.

Stress on the different types of artery and veins.

   

• AC : Arteries carry oxygenated blood and veins carry deoxygenated blood.

• Technique : Drawing with description Ask the student to draw the diagram of

heart and labelled each of the component of the heart.

Once labelled, describe each of the component of heart.

Stress on the different types of artery and veins.

   

1

Scientific explaination

In fact, blood vessels create multiple loops to serve different parts of the body.

That is, one drop of blood does not circulate completely around the body before returning to the heart.

An artery will take it to one part of the body, a veinwill bring it back.

Alternative Concept

Blood travels in one continuous loop around the bodies

2

TECHNIQUE

Doing activity- Double circle activitySTEPS:

Arteries to the lung

Veins to the heart

1. Divide the class into two groups

2. Give each group a card that describes a location of blood flowing through the circulatory system.

Right side of the heartArteries to the lungs

Capillaries of the lungsVeins to the heart

Left side of the heartAorta

ArteriesArterioles

Capillaries of the bodyVenules

VeinsVena cava

The capillary cards are bothred and blue, denoting an exchange of oxygen and carbon dioxide.

3. Ask students to position themselves using their cards to form a “double circle” (or figure eight), representing the correct flow of blood from the heart to the lungs, back to the heart, out to the body and back to the heart.

4. Remind students that both oxygenated and deoxygenated blood ispumped throughout the body at all times. The capillary cards are bothred and blue, denoting an exchange of oxygen and carbon dioxide

5. After the students form their “double circle,” they should pass around the red blood cells (tennis ball), reading their part of the body when theyreceive the ball. This will reinforce the flow of blood through the circulatorysystem. The class will then tape their cards to the board in a “doublecircle” to show the correct order of blood flow throughout the body.

6. Have students squeeze the tennis ball a few times. This exercise

demonstrates how hard your heart works with every heartbeat. An

average adult heart beats (squeezes) about 70–80 times in one minute.

If something is wrong with your heart, the heart muscle has to work

extra hard to supply your cells with the proper nutrients. This additional

work puts stress on your heart and may cause problems for your heart

and the rest of your body.

Scientific explanationScientific

explanation

Heart as well as LUNGS involve in blood circulation because the blood must go through the lungs to be oxygenated

Heart as well as LUNGS involve in blood circulation because the blood must go through the lungs to be oxygenated

AC : Blood circulation only involves the organ of heart.

• Technique : Demonstration in class

Create an activity (role play) in class using the students as the model

Involving the students themselves will make them understand better

Eg : Circulation of Blood

   

AC : Blood circulation only involves the organ of heart.

• Technique : Demonstration in class

Create an activity (role play) in class using the students as the model

Involving the students themselves will make them understand better

Eg : Circulation of Blood

   

Shopping Mall

Bus Station

Home

Heart

Lungs

Body cell

Scientific Concept:

The gaseous exchange occur in the lungThe gaseous exchange occur in the lung

This based on the characteristic of the lung:• Thickness of the wall• Moisture • Surface area

Site of gas exchange occur in the heart; not the lung

Site of gas exchange occur in the heart; not the lung

Misconception 4:

Technique:

POE by using a videoPOE by using a video