Detailed Lesson Plan
In Science and Health 4
Unit 1
The Digestive System
Prepared by : SHERYL V. TIANA
Submitted to : MS. NOVA MARIE E. ANTIQUANDO
Time : MWF 5:30-7:00pm
I. Objectives
At the end of the discussion students should be able to:
K – Remember and understand the parts of the digestive system.
S – Embody the parts of the digestive system and its functions.
A – Organize the parts and functions of the digestive system.
II. Subject Matter
Topic : Parts and Functions of the Digestive System
Materials : Chart, Pictures
References : Science and Health Grade 4, Unit 1 p30-32
III. Procedure
A. Preliminary Activity
Teachers Activity Pupils Activity
Preparatory Activities
a. Prayer
Our Father…
Our Father…
Amen.
Amen.
b. Greetings
Good afternoon teacher.
Good afternoon class.
Thank you teacher.
Please sit down.
c. Checking of attendance
Awareness
Let’s sing a song…
If you’re happy and you know it, show
your teeth! 2x
If you’re happy and you know it and you
really want to show it,
If you’re happy and you know it, show
your teeth.
1st teeth
2nd mouth(munch, munch)
3rd esophagus(gulp, gulp)
4th stomach(tap, tap)
5th anus(fart, fart)
B. Lesson Proper
Presentation
Show some pictures. Let the pupils
identify the picture being shown.
These are:
Mouth
Liver
Small intestine
Pancreas
Anus
Large intestine
Stomach
Rectum
Esophagus
“Very good!”
Discussion
“Our topic today is about digestive system.”
Based on the picture I have shown to
you a while ago, what do you think is
our topic for today?
“Very good! Very observant!”
The pictures that I have shown to you
are the digestive organs that makes up
the digestive system.
The process of breaking up and
dissolving of food so that it can be use
by our body is called digestion.
Post a chart.
PARTS OF THE DIGESTIVE
SYSTEM
1. Mouth – the mouth receives the food
you eat. Inside the mouth are the tongue
and the teeth. Digestion begins in the
mouth.
1.A Teeth - The teeth bite, cut and chew
the food. As you chew the food, the
tongue with the help of the saliva mixes
the food.
1.B tongue – The tongue helps you
swallow the food.
2. Esophagus – is a long tube about 25
to 30 centimeter-long where the food
passes. The food is squeeze and push
down from the mouth with the help of
the tongue through the esophagus by the
muscular movement known as
peristalsis.
3. Stomach – is a stretchable hollow
muscular bag. It produces gastric juices
that help in the mixing and breaking the
food further.
4. Small Intestine – is a coiled tube
measures 6 - 7 meters and 3 centimeters
in diameter connected to the stomach. It
is where the final digestion happens.
5. Liver – produces bile which goes
through the gall bladder. It is the largest
gland in the body. Bile help digest fats.
6. Pancreas – an organ that produces
pancreatic juices that digests
carbohydrates, fats and proteins.
7. Large Intestine – a large coiled tube
attached to the small intestine. It is
where undigested food is
temporarily stored. It reabsorbs most of
the water and minerals.
8. Rectum – it is the passage of
undigested food from the large intestine.
9. Anus – an opening where waste come
out the body. This elimination of body
waste is called defecation or bowel
movement.
Generalization
What do you call those organs where the
“Digestive System”
food passes through?
“ Esophagus, Liver, Large intestine, Small
What are the parts of the digestive
intestine, Mouth, Stomach, Pancreas, Rectum
system?
Anus”
“Food should be digested so that it can be use
Why should the food be digested?
by our body.”
Label the parts of the digestive system.
Application
Identify the parts described below.
Choose your answer from the box below.
These will be done orally.
1. A tube connecting the mouth and the
stomach.
2. The largest gland in the body that
secretes bile.
3. It is where the undigested foods
temporarily stored.
4. A long narrow coiled tube where
digestion is
completed.
5. The part where digestion begins.
Small intestine Esophagus
Mouth Large intestine
Liver Rectum
Pancreas Anus
IV. Evaluation
Encircle the letter that has the correct answer.
1. The process of breaking up and dissolving food so
that it can be taken into the blood to be used by the
body is known as _____________.
a. Digestion b. Respiration c. Excretion
2. When we eat, all the foods that we take in are not
digested; where do you think the undigested food
go and stored?
a. stomach b. anus c. large intestine
3. Digestion is finally completed at what part of the
body?
a. small intestine b. stomach c. pancreas
4. We use our mouth when we eat our food. Where do
you think digestion begin?
a. stomach b. mouth c. anus
5. The waste leaves out of the body through the
opening called ______________.
a. anus b. rectum c. pancreas
V. Assignment
Draw the Digestive System in your notebook and label the parts.
