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THE HUMAN CIRCULATORY SYSTEM – THE HEART

TITLE:  LESSON NOTE ON BASIC SCIENCE AND TECHNOLOGY

SUBJECT: BASIC SCIENCE AND TECHNOLOGY

TERM: FIRST TERM

THEME: LIVING AND NON LIVING THINGS

WEEK: WEEK 10

CLASS: PRIMARY 6

NAME OF TEACHER:

DATE:          

AGE OF STUDENTS:

CLASS COMPOSITION: Slow and fast learners.

PERIOD:

TIME: 40 MINUTES

TOPIC: THE HUMAN CIRCULATORY SYSTEM – THE HEART

PERFORMANCE OBJECTIVES

At the end of this lesson, Pupils should be able to:

  1. State the functions and importance of blood in the body.
  2. State the functions of blood component.
  3. List the things that blood carries round the body.
  4. Explain how some diseases affect blood.
  5. Name the parts of the human heart and blood vessels.
  6. Differentiate the blood vessel.
  7. State the functions of the heart and the blood vessels.
  8. Explain how food and materials are distributed to different parts of the body by blood.

TEACHING AND LEARNING MATERIALS

  • Whiteboard/Chalkboard
  • Explanatory posters/pictures showing the solar system
  • Explanatory videos on solar system

TEACHING AND LEARNING METHODS

  • Explanation
  • Discussion
  • Questions and answer

REFERENCE MATERIALS

  • NERDC Basic Education Curriculum for primary schools.
  • Universal Basic Education Curriculum for primary schools.
  • Lagos State Scheme of Work for Basic Science and Technology.
  • Unified Schemes of Work for Lagos State Primary Schools (MIDDLE BASIC)
  • Online Materials.
  • Edudelight Basic Science and Technology for Primary Schools.
  • ENTRY BEHAVIOUR/ PREVIOUS KNOWLEDGE: the students have been taught earth and sky movement.

WORD FILE: material, components,tissues.    

             LESSON CONTENT

HUMAN CIRCULATORY SYSTEM

Without blood there will be no life of human or animals.

Blood is the fluid that caries the food material into all part of our body. It is reddish in colour.

The components of blood are:

  1. Red blood cells (erythrocytes)
  2. White blood cells (Leucocytes)
  3. Platelets (thrombocytes)
  4. plasma

RED BLOOD CELLS    

It carries oxygen from the lungs to other parts of the body. They are produced in the bone marrow of large bones. They form OXY –HAEMOGLOBIN by taking oxygen from the lungs. They are much in human body.

WHITE BLOOD CELLS

  1. They protect the body against disease.   
  2. They are formed in the bone marrow and lymphatic tissues.
  3. They are less numerous in  human body
  4. They are larger in size than the red blood cell.

PLATELETS

  1. They cloth blood and prevent loss of blood when there is a cut or wound on the skin.
  2. They are tiny cells produced in the bone marrow.

PLASMA

  1. It has about 90% of water with digested soluble materials like protein, salt and glucose.
  2. It makes up 60% of the total volume of blood.
  3. It is the liquid portion of blood.

THE IMPORTANCE OF BLOOD

  1. Blood gives us life.
  2. It protects our body from diseases.
  3. it circulate heat round our body thereby  keeping us warm.
  4. The burning of soluble food substance by oxygen that gives the body energy take place in the blood.
  5. It helps to carry digested foods into all part of the body.

DISEASES THAT AFFECT BLOOD

The following are some diseases that affect blood. These are:

  1. Sickles cell
  2. Anaemia
  3. AIDS(Acquired immune Deficiency syndrome)
  4. Malaria
  5. Leukaemia

THE HEART

The heart is the muscular organs that pumps blood round the body. It have four chambers. These are:

  1. Right auricle
  2. Left auricle
  3. Right ventricle
  4. Left ventricle

The right auricle and the right ventricle have blood vessels with less oxygen and more carbon dioxide. The left ventricle and the left auricle contains blood

With more oxygen that comes from the lungs.

Difference between the Auricle and Ventricle

The walls of the ventricles are thicker and more muscular than the auricles.

                    BLOOD VESSELS

Blood Vessels are tubes through which blood moves round the body.

The blood vessels are

  1. Arteries: they are blood vessels that carries blood away from the heart to all part of the body.
  2. Veins:  these are blood vessels that carries blood from one part of the body to the heart.
  3. Capillaries: they caries blood between the arteries and veins. They are tiny network of blood vessels.

BLOOD CIRCULATION

The circulatory is the way how blood moves round the body. It is made up of the heart, blood and blood vessels.

There are two types of blood circulation in the body. These are: Pulmonary circulation and systemic circulation.

  1. PULMONARY CIRCULATION: Blood flows from the heart to the lungs and back to the heart.
  2. SYSTEMIC CIRCULATION: blood is pumped from the heart to other parts of the body and back to the heart.

INSTRUCTIONAL PROCEDURE

  • The Teacher revises the previous lesson (EARTH AND SKY MOVEMENT).
  • The Teacher introduces the lesson through question and answer (THE HUMAN CIRCULATORY SYSTEM – THE HEART).
  • The Teacher explains the lessons.
  • The Teacher write the note on the board.

LEARNERS ACTIVITIES

Learners participate in the class discussion

LESSON EVALUATION

Teacher ask the learners to:

  • State the functions and importance of blood in the body.
  • State the functions of blood component.
  • List the things that blood carries round the body.
  • Explain how some diseases affect blood.
  • Name the parts of the human heart and blood vessels.
  • Differentiate the blood vessel.
  • State the functions of the heart and the blood vessels.

CONCLUSION: the teacher summarize the lesson.

PREVIOUS LESSON: EARTH AND SKY MOVEMENT

NEXT LESSON: THE HUMAN BODY (SKELETAL SYSTEM)

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