BIOLOGY PROBLEM-BASED LEARNINGGoh Yi Rui 3O1(10) & Teh Zi Hao 3O1(31)

Objectives

A well balanced diet is necessary for the proper growth and development of the body, especially so for the growing and active adolescent boys in our school.Furthermore, there are some students with special dietary requirements and their choice of meals may be limited

To propose changes to food offered in the school canteen to suit the dietary needs of a specific group

Target group

Vegetarians Students from age 13-16 Adults from age 20-35

Survey

Consists of 4 students & 2 teachers Questionnaire of 8 Questions, namely:

1) Do you take supplement pills?2) What type of vegetarian are you?3) Do you take mock meat?4) Why are you a vegetarian?5) How else do you get your nutrients from?6) How often do you exercise?7) What are the health benefits of being a vegetarian?8) What should a balanced & nutritious meal for a

vegetarian be like?

Surveyee 1- Mr Tan BB

Response in chronological order, as quoted Yes, multi-vitamins, vitamin C & cod liver oil Strict vegetarian Yes Religion/ Animal lover Pills, beans, tofu 2-3times a week Environmentally friendly Low starch, high fiber meal

Conclusion

Most surveyees are vegetarian because of religion

A portion of them are lacto-ovo vegetarians

All of the surveyees exercise regularly, their level of activity are around the same

Most thinks that beans, mushrooms and green plants like broccoli are main sources of vital nutrients

All think that a vegetarian stall is the best solution

Vegetarianism, Pros

In our current society, many people suffers from obesity, by being a vegetarian one can cut out junk food from one’s diet

Food nowadays contain artificial chemical, harmful animal products with toxins

Vegetarianism ensures low calories which in turn gives vegetarians a healthy weight

Lower risk of cancer

Vegetarianism, Cons

Lack of complete proteins in plant-based products

Lack of the vitamin riboflavin (B2) that is important in converting protein, fats and carbohydrates into energy

Lack of vitamin B12 which is for the formation of red blood cells and the maintenance of the nervous system

Lack of Vitamin D

Basic Dietary Needs

Carbohydrates Main energy source Converted into other organic

compounds(amino acids) when in glucose form

Present in rice, noodles, wheat & grain food Proteins

Needed for synthesis of protoplasm Repairs tissue Formation of antibodies Present in bean-based products, egg,

mushrooms

Fats High satiety level, easily full High energy content Essential for dissolving of fat-soluble

vitamins (A,D,E,K) Storage of calories Present in vegetable oil

Iron Formation of haemoglobin and myoglobin Present in beans & dark leafy vegetables

Fiber Helps retain water of undigested materials

in the large intestine Reduces risk of getting colon cancer Present in most vegetables

Calcium Prevents blood clot Maintains strength of teeth and bones Present in soy-based products, diary

products, tofu, dark leafy vegetables

School Canteen

Our school canteen does not cater to vegetarians

Most, if not all of the food have something of animal origin

Proposed idea: A vegetarian stall

Vegetarian Stall

Similar to Stall 3- Purple Plate “pick what you want” style Consists of:1. Mushrooms – White Button Mushroom

as it retains most of the nutrients after being cooked. High in vitamins

2. Brown Rice – Staple food, taken with beans to provide “complete” protein

3. Beans – Baked beans & groundnuts which contains fats and protein needed

4. Vegetables – Green & dark leafy vegetables which provides a significant portion of the fiber & proteins

5. Vegetables – Broccoli, high in antioxidant & vitamins

6. Tofu – For proteins & oil 7. Mock Meat – To satisfy the craving for

meat for some of the students

Bibliography

http://books.google.com.sg/books?id=ZrhswGcQY-sC&pg=PA108&lpg=PA108&dq=starch+nutrition+vegetarians&source=bl&ots=-o9K9LTlza&sig=Rz1tcmM-t5umLL7u6kNgCn5SBLE&hl=en&ei=mx4dSqmdD4OMkAWPy8GNDQ&sa=X&oi=book_result&ct=result&resnum=5

http://www.panerabread.com/menu/nutrition/profile.php?id=165

http://www.revolutionhealth.com/healthy-living/food-nutrition/alternative-food-attitudes/vegetarian/vegetarian-diet

http://www.moncuisine.com/100z_veg_info.htm http://www.vrg.org/nutshell/athletes.htm http://www.happycow.net/vegetarian_diet.html http

://www.hsph.harvard.edu/nutritionsource/what-should-you-eat/carbohydrates-full-story/index.html

http://en.wikipedia.org/wiki/Carbohydrate http://en.wikipedia.org/wiki/Fat http://www.hsph.harvard.edu/nutritionsource/what-should-you-

eat/fats-full-story/index.html http://www.hsph.harvard.edu/nutritionsource/what-should-you-

eat/protein-full-story/index.html http://www.stevepavlina.com/forums/health-fitness/4790-most-

vegetarians-unhealthy-importance-dietary-protein.html http://en.wikipedia.org/wiki/Protein_in_nutrition http://www.fitnesshealthzone.com/vitamins-supplements/impor

tance-of-vitamin-c/ http://www.healthy-vitamin-choice.com/ http://www.mamashealth.com/diets/goodcarbs.asp