The document is a lesson plan about the stomach and intestines. It contains 14 pages describing the functions of the stomach and intestines in digestion. The lesson plan includes preliminary activities, guided questions, an activity where students simulate digestion by mixing food in a resealable bag, and a conclusion summarizing that the stomach breaks down food into smaller pieces using muscles and juices, while the small intestine further digests food and absorbs nutrients using enzymes.

2. ANDY B.BIERNEZA
Paradise Elementary School
Prepared by:
STRATEGIC INSTRUCTIONAL
MATERIAL IN SCIENCE IV
TEACHER-I
STOMACH AND
INTESTINES
Banisilan North District

3. Prepared by:
ANDY B. BIERNEZA, LPT
Teacher-1
Noted by: Concurred by:
CARLOS B. BARRETTO JR. MONICA D. BERMEJO
TIC Principal II In-charge
Recommending Approval:
LENIE D. FORRO ELPIDIO P. DAQUIPIL, EdD APPROVED:
EPS Science CID Chief OMAR A. OBAS, CESO IV
Schools Division Superintendent

5. STOMACH
AND
INTESTINES
OUR LESSON IS ABOUT:
Objective:
explain the functions of stomach and intestine in digestion
S4LT-IIab-2

6. Good morning!
Oooppss…
I want something….
Yes! I want to eat Cookie!
Preliminary Activity
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8. D
G
U
I
E
CARD 4

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18. smaller particles.
The stomach is a large organ that is lined
with the layer of muscles.
as the muscles contract and relax, food in
the stomach is squeezed, twisted and churned.
While the food is being physically changed in the stomach, digestive
Enzymes and juices are also combined to change it into nutrients.
The process of digestion is both mechanical and chemical.
The Mechanical part breaks down food into small bits by chewing of
food in the mouth and squeezing of food particles in the stomach.
The chemical part of digestion is the mixing of food particles with
Chemicals in the saliva and stomach which changes it into nutrients
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In the stomach, food is broken down into

19. omplete
process of chemical digestion.
that can be absorbed by the body.
Food stays in the stomach for four hours until the food turns into
a thick liquid.
The food that has been moistened, chewed in the mouth and Mixed
with chemicals or enzymes in the stomach goes to your
Small intestine
Further action enzymes in the small intestine complete the
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22. w
The small intestine is about 2.5 cm wide and
7 m long coiled tube where food is finally
digestive and absorbed.
The wall of small intestine are made of muscles
That squeeze food and continuously move it.
It contain digestive juices and other enzymes that help break the
food Into nutrients.
Thus, final digestion takes place in the small intestine.
The nutrients are then absorbed by the small intestines then go
into your blood steam.
The blood carries these nutrients to the different parts of the body.
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In the stomach, food is broken down into

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24. Guided Questions:
1. What happened to the biscuits, flour, and other food
After shaking the resealable bag?
2. Have you eaten your meal today?
3. Where do you think these food go after you have
swallowed it?
4. The stomach is similar to the bag in your activity
how they are similar?
5. will the food stay in the stomach?
6. what will happened to the food?
7. what happens after to the food is broken down into
Smaller pieces?
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Guided Card 1

25. Activy Card 1
Matching type
Direction: name each part, write the letter of the correct answer
Test your Wits!!! (I know you can do it!)
A. esophagus
B. mouth
C. stomach
D. small and large intestine
E. rectum
____ 2.
____ 3.
____ 4.
____ 5.
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____ 1.

26. Small pieces of biscuits,
resealable plastic bag, a glass of
water, 2 table spoon of flour, any
small pieces of food available.
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Activity Card 2

27. 1. Put the water in the clean
resealable plastic bag.
2. Add the broken pieces of biscuits
3. Add the flour.
4. Add the small pieces of any food
Available.
5. Shake the resealable plastic bag,
Shake until all are mixed well.
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28. XX
GENERALIZATION
Time to Sum Up!
I learned that…..
DIGESTIONhappened
WITH THE HELP OF SALIVA
WHERE THE LIQUID SUBSTANCE
(CHYME) BEING ABSORBED
WHERE FOOD IS BROKEN DOWN INTO SMALLER
PIECES WITH THE AID OF GASTRIC JUICES
LONG TUBE CONNECT THE MOUTH AND STOMACH
IS THE PASSAGE OF WASTE MATERIAL (FECES)
UNDIGESTED FOOD OR WASTE MATERIAL STORED
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29. Now I knew!!!!
As the muscles in the stomach
Continue to contract, the food
is squeezed and mixed with
digestive juices to change the food
into nutrients.
Small intestine contains digestive juices
And other enzymes that completely digests
food and absorbed digested nutrients.
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GENERALIZATION

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38. K to 12 Science Teacher’s Guide IV
(Teacher’s Guide IV, pp. 79-82)
K to 12 Science Learners Materials IV
(Learners Materials IV, pp. 70-71)
Philippine copyright 2006 by science Education Institute and advanced
Science & Technology Institute
DOST (Science)
34

39. Prepared by:
ANDY B. BIERNEZA, LPT
Teacher-1
CORRECTION
KEY
TO
35

40. nd
Guided Card 1
Key to Correction
1. It was broken into small pieces and become sticky.
All materials added were combined together.
2. Yes
3. It will go to the stomach.
4. They are both big.
5. No
6. It will be broken down into smaller pieces.
7. It will further be digested in the small intestine
to be absorb by the body.
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41. Key to Correction
ACTIVITY CARD 1
Test your wit!!!
1. b (mouth)
2. a (esophagus)
3. c (stomach)
4. e (rectum)
5. b (small and large intestine)
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