NAME OF THE TEACHER : SHARI.K.S

NAME OF THE SCHOOL : SUBJECT : BIOLOGY UNIT : Chemical Changes in food LESSON : Nutritional Deficiency Diseases.

CLASS : IX DIVISION : STRENGTH : DURATION : 45 minutes DATE :

CURRICULAR STATEMENT

Develops different dimensions of knowledge, attitude & skills on experiment to study the nutritional deficiency diseases through group discussion, demonstration, role play..etc

CONTENT ANALYSIS

TERMS

Nutrition, Nutritional deficiency diseases, goiter, kwashiorkor, marasmus, rickets

FACTS

1. Deficiency of any of the essential nutrients in our diet is called nutritional deficiency.

2. Deficiency of Iodine causes goiter. 3. Kwashiorkor is a protein deficiency disease in children. 4. Deficiency of Vit D causes rickets in children.

MINOR CONCEPT

1. The lack of nutrients in the food causes nutritional

deficiency diseases. 2. The important nutrients present in the food include

proteins, fats, vitamins, carbohydrates & minerals. 3. Deficiency of protein in diet causes marasmus &

kwashiorkor. 4. Deficiency of vitamin D causes rickets & iodine

deficiency causes goiter.

MAJOR CONCEPT The deficiency of nutrition in food affect the physical & mental health of human.

LEARNING OUTCOME Enables pupil to develop -factual knowledge on nutrition deficiency diseases through i. Recalling new terms like nutrients, Vitamins, minerals, carbohydrates, fats, protein, marasmus, kwashiorkor, goiter, rickets..etc. ii. Recognizing the presence of nutrients in various foods. iii. Explaining the symptoms of nutritional deficiency

disease. -conceptual knowledge about the nutritional deficiency disease through. (i) Recalling the importance of nutrients. (ii) Recognizing the absence of nutrients in junk food (iii) Explaining the symptoms & causes of nutritional deficiency diseases. -procedural knowledge on the nutritional deficiency diseases through (i) Analyzing different types of nutritional deficiency diseases. (ii) Observing the symptoms of nutritional deficiency diseases. -Scientific attitude towards nutrient deficiency through (i) Knowing more & more about the relevance of nutrients in healthy life. (ii) Curious to know more about deficiency of nutrients & their after effects. -Process skills like (i) Observing the symptoms of nutritional deficiency

diseases. (ii)Differentiating the different nutritional deficiency diseases in humans.

PRE REQUISITES

Diseases which are caused by the deficiency of nutrients are known as nutrition deficiency diseases.

TEACHING LEARNING RESOURCES

Paper cutting of nutrition deficiency diseases.

Instruction cards containing discussion points.

Text book, Std IX SCERT

REFERENCES SCERT TEXT BOOK FOR STANDARD IX TEACHERS HANDBOOK

Classroom Interaction Procedure

Expected Pupil Activity

INTRODUCTION

A conversation between Appu & his grandmother who went to see the

science exhibition is given below.

Grandma, look at this picture. These people have staring eyes, lean legs & protruding belly. What is it?

Appu

It is because they are malnourished & lack nutrients in diet.

Grandma

Did you notice the above conversation? What according to the

grandmother is the reason for various diseases? So today we shall discuss about malnutrition, nutritional deficiencies & their symptoms

etc.

Discussion points

1. What are the diseases caused by nutritional deficiencies? 2. Which disease is caused by the deficiency of iodine? What are its

symptoms? How can we prevent it? 3. What is marasmus? What are its symptoms? 4. What is rickets?

5. What are its symptoms? 6. What are the remedial measures for ricket?

1. Goitre, kwashiorkor, marasmus, rickets. 2. Goitre, enlargement of thyroid gland. Use of

iodized salt & leafy vegetables. 3. Protein deficiency disease. Lean body, projected ribs, sunken eyes, dry skin

4. Vit D deficiency disease. 5.Bent limbs, decayed teeth & joint pain.

6. Prevented by using vitamin D rich food, like carrot, leafy vegetables, fish.

CONSOLIDATION

1. Goitre, kwashiorkor, marasmus & rickets are the various nutritional deficiency diseases.

2. Goitre is caused by deficiency of iodine. Symptom is thyroid gland swelling. Consuming fish & iodized salt..etc can prevent

it. 3. Protein deficiency causes kwashiorkor in children. Symptoms

are protruding stomach, projected eyes, oedema on legs. It can be avoided by consuming protein rich food.

4. Lack of protein & energy in diet causes marasmus in adult. Symptoms are lean body, projected ribs, sunken eyes, dry skin.

ACTIVITY 2 Now you have understood about malnutrition & nutritional deficiency

diseases. Lets have a role play

Goitre I am goiter. I am born out of iodine deficiency in people. Identify me

by the enlargement of thyroid gland. You can avoid me by consuming foods containing iodine, such as fish, leafy vegetables..etc

Kwashirokor I am Kwashiorkor. I am found in children with protein deficiency such

children develop stunted growth, mental retardation, protruding stomach, projected eyes & oedema on lungs. Eating protein rich food

like milk, egg, meat, pulses etc can prevent me.

Marasmus I am marasmus. I am found in adults with protein & energy

deficiencies. People whom I am found will have lean body, projected ribs, sunken eyes, oily skin..etc. You can prevent me by consuming

protein rich diet.

Rickets I am rickets. I am found in children too. I am borne out of Vit D

deficiency. My symptoms are bent limbs, decayed teeth & joint pain. You can avoid by having carrot, leafy vegetables..etc

Students conduct role ply on nutritional

deficiencies.

REVIEW

QUESTIONS

1. What are the nutritional deficiency diseases? 2. What are the different diseases caused by

nutrition deficiency? 3. What is goiter? What are the symptoms &

prevention? 4. Name the disease caused by protein deficiency in

adult? 5. What are the symptoms of marasmus? 6. What are rickets?

ACTIVITY

Make a chart showing nutritional deficiency diseases, their symptoms & preventive measures.

FOLLOW-UP-ACTIVITY

Collect more data on other nutrition deficiency diseases, their causes, symptoms & preventive measures.

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