MÁSTER UNIVERSITARIO EN PROFESORADO DE EDUCACIÓN SECUNDARIA OBLIGATORIA Y BACHILLERATO, FORMACIÓN PROFESIONAL Y ENSEÑANZA DE IDIOMAS
CLIL DIDACTIC UNIT
“What’s your blood type?”
Alumnas: Andrea Puig Mengual Roberta Serinelli
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Introduction This didactic unit is going to last three sessions, working on the main parts of the circulatory system, the function of the heart, the blood composition and the circulation.
SESSION 1 INTRODUCTION TO THE CIRCULATORY SYSTEM
Activities Activity 1 The first activity in this session is watching a video. First of all the teacher introduces the idea of the importance of the heart and the blood asking the students some questions and helping them with the answers: Where is your heart? What does it do? Why is so important? It is important to tell them the correct words: pump, blood… The web page is: http://kidshealth.org/en/kids/csmovie.html The video gives a general view of the topic. It introduces a lot of new vocabulary and explains what the heart is like and the blood circulation. It is advisable to watch it calmly and stop to make appropriate explanations or comments. At the end of the video the students will be able to answer the following questions:
How many chambers are in the heart?
What are the names of the chambers?
What are the names of the blood vessels?
What substances does the blood carry?
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Activity 2 After watching the video the students have to label the main parts of the circulatory system and the chambers of the heart.
Heart Arteries Veins
Left ventricle Right ventricle Right atrium Left atrium
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Activity 3 The next activity is a reading comprehension about blood composition. The teacher reads the text aloud and focuses attention on important information and pictures. After that the students have to read the text in pairs, one sentence at a time. The teacher goes around the classroom helping with the new vocabulary pronunciation. The teacher should ask questions in order to memorise what blood is made of and the function of each component (plasma and blood cells):
What four main things does blood contain? Which blood cells carry oxygen? Which blood cells fight disease? What is plasma? What blood cells help to clot your blood?
Adults have about 5 litres of blood in their body. Blood is made of a pale liquid called plasma. Floating in it are red cells, white cells and platelets.
Plasma carries dissolved carbon dioxide and food. Red blood cells collect oxygen in the lungs and carry it round the body. White blood cells fight infections. Platelets help blood to clot where there has been a cut.
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SESSION 2 BLOOD CIRCULATION
Activities Activity 1 This is a reading comprehension activity. The students have to read a text silently and underline the words and structures that they don’t understand. Afterwards, some of them are going to read aloud parts of the text and they are going to ask about possible doubts.
The Heart The heart is made of muscle tissue and it pumps blood around the body to deliver nutrients and oxygen to all the cells in the body. The nutrients enter the blood from the digestive system to be carried to all parts of the body. The oxygen is collected from the lungs where it is exchanged for carbon dioxide. The heart is divided into four sections called chambers, the left and right atria (singular atrium) at the top and the left and right ventricles at the bottom. Blood is pumped from the right ventricle through an artery to the lungs. Oxygen is exchanged for carbon dioxide in the capillaries in the lungs. The blood that now contains oxygen (oxygenated) is then carried back to the heart via a vein to the left atrium. This oxygenated blood then passes into the left ventricle through a valve and is pumped to all parts of the body. The oxygen and nutrients pass to the body cells from the capillaries and carbon dioxide is collected. The blood is now called deoxygenated blood. This deoxygenated blood is carried back to the right atrium of the heart. It then passes to the right ventricle through another heart valve ready to be pumped to the lungs again to collect more oxygen. The blood circulation is like a figure of eight.
Activity 2 After reading and discussing about the heart and the circulation, the teacher asks the students to do both activities on their own. First, they have to match the parts of the circulatory system with their function and second they have to label the chambers of the heart and the main artery and vein.
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1. Heart
a. Carries bloock back to heart.
2. Blood
b. Pumps blood around the body.
3. Artery
c. Carries blood away from the heart.
4. Vein
d. Carries food and oxygen around the body
Left ventricle Right ventricle Right atrium Left atrium Aorta Pulmonary aerty
Activity 3 The last activity is going to be an online quiz. So the students are going to do the activity in pairs. The pairs have to share a computer. Each partner can do it in turns. http://www.bbc.co.uk/education/guides/zhnk7ty/test It is a multiple-choice quiz and there are 10 questions about the topic.
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SESSION 3 THE CIRCULATION
Activities Activity 1 The teacher introduces a short PowerPoint presentation as a summary of the lesson. The students are going to watch it in groups of three, answering the questions they are going to find in it. After that, the students are going to discuss in groups of three and, in turns, debate (5 minutes) about this topic.
Giving blood saves a lot of lives.
The teacher should write some phrases and sentences on the board to help the students to speak. At the end of the discussion each group has to express some ideas to the rest of the class.
Activity 2 This activity is a revision and a conclusion of the circulatory system. The students have to remember the vocabulary and structures worked on the previous sessions. The teacher slits the class in two teams to play the game. He/She gives them the questions (without the possible answers). They have to discuss all the questions and try to agree. 1. 2. 3. 4. 5.
What does your heart do? What does your pulse rate tell you? Blood moves round your body in special tubes called blood vessels. Say their names. What happens to your blood when it reaches your lungs? Where is your heart?
After that they can start the contest. The teacher starts the game reading aloud the questions and then he/she also reads the three possible answers. As the students
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have been talking previously about the answers, it is easy to decide which is the correct one.
Activity 3 In the last activity the students have to match and then write true sentences about what they have learned.
There are...
… the main vein.
Ventricles are...
… away from the heart.
Arteries carry blood...
… thicker than veins.
Veins carry blood...
… bigger than atriums.
Arteries are...
… back into the heart.
The Vena Cava is...
… the main artery.
The Aorta is…
… four chambers in the heart.
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