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FOOD AND NUTRITION
Lesson 1 of 6 Lessons
Lesson 1- All about Food, Diet and balanced Diet
Lesson 2- All about food Tests + Homework
Lesson 3-5 All about Digestion in Human (Human Biology) + Homework - Poster design or
information leaflet on Nutritional information.
Lesson 6-Topic Review lesson-Homework using Concept map or Mind map
1. What is a healthy Diet?
2. What exactly is meant by a 'healthy' balanced diet?
3. Clearly distinguish between a healthy diet and a healthy balanced diet using the
table below
Healthy Diet
Healthy Balanced Diet
4. Should children and adults have the same dietary plan? Using the table below
suggest and plan or describe the diet for a Year 8 student (yourself) and an
adult (your parents or Science teacher)
Yourself
Breakfast:
Your Teacher
Breakfast:
Lunch:
Lunch:
Dinner:
Dinner:
5. Use the information above to generate bar charts on graph paper-one displaying
your diet and a second bar chart showing the diet of an adult which could be
your teacher or parents.
6. Use the nutritional information panel from cereal packets to identify the main
nutrients contained in food.
7. What is the importance of water in our diet? Make a list of sources of water in
your diet.
8. Complete the table below by identifying foods that are rich in a) Carbohydrate
b) Proteins c) Fat d) Fibre
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Lesson 2 (Food Test)
Test for Glucose
1.
Place food substance under test in a test tube
2. Add Benedicts Solution (amount of Benedicts Solution? Use your discretion or
speak to your teacher)
3. Place test tube containing food substance in water bath for 3 minutes at 100
degree Celsius
4. If the colour of test tube content changes to red\orange glucose is present.
Test B
1.
Rub food substance under test against some filter paper, blank white paper or
brown paper
2. Allow paper to dry
3. If a grease mark is present,
4. What is present in the food?
5. What food test is this?
Test C
1.
Place food substance under test on a white tile
2. Add three to four drops of Iodine Solution
3. Did the colour changes to blue/black
4. If yes, what is present in the food?
5. What food test is this?
Chemical Solution
Iodine
Buiret Solution
Benedicts Solution
NaOH + 3 drops of CuSO4
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Test for
Complete the table below
Carbohydrates:
Sources:
Proteins:
Sources:
Fats:
Sources:
Fibre:
Sources:
9. Food Tests Experiments: Make a list of health and safety requirements for
these tests.
10. In using chemical tests to identify food substances in our diet, give the name of
a chemical that is used in testing
a) Starch:
b) Proteins:
c) Sugar:
d) Fats:
HOMEWORK
Design an information leaflet for
a) Pregnant woman
b) Footballer
c) Builder
d) Teacher or a Solicitor
Showing good sources of nutrients, recommended daily allowance/intake for each
nutrient and the importance or role of nutrients in their diet you have suggested.
OR
Design a poster for your Science classroom showing pictures of food nutrients,
sources of food nutrients and the main role of Carbohydrates, Proteins, and Fats. On
your poster clearly distinguish between a healthy diet and a healthy balanced diet.
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OUR DIGESTIVE SYSTEM
Keywords and Meaning Worksheet. Your task is to
KEYWORD
Food
Digest
Mechanical Digestion
Chemical Digestion
Absorb
Diet
Balanced Diet
Saliva
Villi
Oesophagus
Small intestine
Large intestine
Stomach
Enzyme
Rectum
Definition/Meaning
Roughage
Faeces
Duodenum
Task II:
Build or construct a sequence of events using keywords and meaning from above
commencing with feeding, followed by mechanical digestion, chemical digestion,
absorption and ending with elimination of faeces.
Explain what happens to food as it passes through this tube and make links between
keywords and the digestive system.
TASK III
Complete the table below showing how the complex food you eat is completely broken
down into its most basic nature in the duodenum before absorption.
Nutrient in Food
Broken down into
Proteins
Fats
Complex sugars
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
TASK IV
Indicate next to each statement True or False
Food is required by humans to grow and survive- T/ F
Food is the fuel in the body needed for biological reactions- T/F
Enzyme called lysozyme acts on the food in the mouth while it is chewed.T/F
This is the second step in the process called digestion- T/F
Food broken down into smaller bits travels through the oesophagus towards
the stomach- T/F
The stomach is also involved in the break down of food particles into smaller
bits-T/F
The acid in the stomach breaks down the food into a semi-liquid state-T/F
Food is completely broken down into its most basic form in the DuodenumT/F
Absorption starts in the Duodenum- T/ F
Proteins are broken down to Amino acids
Amylase is an enzyme produced by the saliva
Glucose is broken down to starch in the small intestine- T/ F
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Nutrient
Carbohydrates
Type of Food
Role in the Body
Proteins
Fats
Vitamins and Minerals
Your Task – Complete the table above using information from this table.








Meat, Fish
Fried foods and some fast food or
processed foods
Nuts-(e.g Cashew nuts)
Contain building materials for
making glucose
Scurvy
Anaemia
Kwashiorkor
Heart attack




Cereals, Potatoes, Pasta, Rice
Sugars in some foods
Fruits and Vegetables
Citrus fruits (e.g Oranges)


For growth and repairs of tissues
For warmth (keeping us warm-a
means of insulation in our bodies,
stored as energy under the skin)
and providing energy.
For energy (a major source of
energy)
Keep us healthy and prevent
diseases.


TASK 7
1.
2.
3.
4.
5.
6.
7.
Make a list of conditions under which the process of digestion
can occur in humans
Suggests what might happen or how these factors might affect
digestion if the conditions you have listed are not met.
What is the use of Acids in human digestive system?
What is the name of the acid in our stomach
What is the pH of acid in the stomach?
Distinguish between digestion and egestion
Why do we need fibres in our food?
8. How are the products of digestion transported to cells in our
bodies?
FINAL TASK 8
Draw a concept map or a mind map showing connections between
keywords or ideas you did come across in this topic. You may want to
consult with your teacher before you start. Use resources from the
internet, your science workbook or textbooks, magazines or
newspapers to identify relevant/appropriate links between ideas,
concept and keywords in your concept map. You might also want to
discuss with classmates to see if they have different ideas from
your one. Good luck as you begin your planning!
Please forward comments and suggestions to
[email protected]
or visit the following web addresses for more resources.
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