7
SCIENCE
Second Quarter – Module 1A
Parts and Function
of the Microscope
Department of Education ● Republic of the Philippines
Science – Grade 7
Alternative Delivery Mode
First Quarter – Module 1-A: Parts and Function of the Microscope
First Edition, 2020
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Published by the Department of Education
Secretary: Leonor Magtolis Briones
Undersecretary: Diosdado M. San Antonio
Development Team of the Module
Author/s:
Reviewers:
Micha Cristy L. Elumbaring, T1
Marisa M. Olarte, HT I
Charisma F. Mangharal, T1
Julmar I. Pacarat T1
Evaluators:
Marisol P. Moreno, HT IV
Grace s. Doong, P-1
Maricel B. Compania, HT III
Illustrator and Layout Artist: Micha Cristy L. Elumbaring, T1
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Chairperson:
Co-Chairpersons:
Dr. Arturo B. Bayocot, CESO III
Regional Director
Dr. Victor G. De Gracia Jr. CESO V
Asst. Regional Director
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Schools Division Superintendent
Myra P. Mebato,PhD, CESE
Assistant Schools Division Superintendent
Mala Epra B. Magnaong, Chief ES, CLMD
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7
Science
Second Quarter – Module 1A
Parts and Function
of the Microscope
This instructional material was collaboratively developed and
reviewed by educators from public secondary schools of the Division of
Misamis Occidental. We encourage teachers and other education
stakeholders to email their feedback, comments, and recommendations
to the Department of Education at action@ deped.gov.ph.
We value your feedback and recommendations.
Department of Education ● Republic of the Philippines
Introductory Message
For the learner:
Welcome to the Science 7 Alternative Delivery Mode (ADM) Module on Parts and
Function of the Microscope!
The hand is one of the most symbolized part of the human body. It is often used
to depict skill, action and purpose. Through our hands we may learn, create and
accomplish. Hence, the hand in this learning resource signifies that you as a learner is
capable and empowered to successfully achieve the relevant competencies and skills at
your own pace and time. Your academic success lies in your own hands!
This module was designed to provide you with fun and meaningful opportunities
for guided and independent learning at your own pace and time. You will be enabled to
process the contents of the learning resource while being an active learner.
This module has the following parts and corresponding icons:
What I Need to Know
This will give you an idea of the skills or
competencies you are expected to learn in the
module.
What I Know
This part includes an activity that aims to check
what you already know about the lesson to take.
If you get all the answers correct (100%), you
may decide to skip this module.
What’s In
This is a brief drill or review to help you link the
current lesson with the previous one.
What’s New
In this portion, the new lesson will be introduced
to you in various ways such as a story, a song,
a poem, a problem opener, an activity or a
situation.
What is It
This section provides a brief discussion of the
lesson. This aims to help you discover and
understand new concepts and skills.
What’s More
This comprises activities for independent
practice to solidify your understanding and skills
of the topic. You may check the answers to the
exercises using the Answer Key at the end of
the module.
What I Have Learned
This
includes
questions
or
blank
sentence/paragraph to be filled in to process
what you learned from the lesson.
What I Can Do
This section provides an activity which will help
you transfer your new knowledge or skill into
real life situations or concerns.
Assessment
This is a task which aims to evaluate your level
of mastery in achieving the learning
competency.
Additional Activities
In this portion, another activity will be given to
you to enrich your knowledge or skill of the
lesson learned. This also tends retention of
learned concepts.
Answer Key
This contains answers to all activities in the
module.
At the end of this module you will also find:
References
This is a list of all sources used in developing
this module.
The following are some reminders in using this module:
1. Use the module with care. Do not put unnecessary mark/s on any part of the
module. Use your science activity notebook in answering the exercises.
2. Don’t forget to answer What I Know before moving on to the other activities
included in the module.
3. Read the instruction carefully before doing each task.
4. Observe honesty and integrity in doing the tasks and checking your answers.
5. Finish the task at hand before proceeding to the next.
6. Return this module to your teacher/facilitator once you are through with it.
If you encounter any difficulty in answering the tasks in this module, do not hesitate to
consult your teacher or facilitator. Always bear in mind that you are not alone. We hope
that through this material, you will experience meaningful learning and gain deep
understanding of the relevant competencies. You can do it!
Table of Contents
What I Need to Know
----------------
1
What I Know
----------------
2
What’s In
----------------
5
What’s New
----------------
6
What is It
----------------
7
What’s More
----------------
14
What I Have Learned
----------------
16
What I Can Do
----------------
17
Assessment
----------------
18
Additional Activities
----------------
21
Answer Key
----------------
24
References
----------------
25
Lesson 1
What I Need to Know
This module was designed and written with you in mind. It is here to help
you master the nature of Biology. The scope of this module permits it to be used
in many different learning situations. The language used recognizes the diverse
vocabulary level of students. The lessons are arranged to follow the standard
sequence of the course. But the order in which you read them can be changed to
correspond with the textbook you are now using.
After going through this module, you are expected to identify the parts of
the microscope and their functions. (S7LT-IIa-1)
Specifically, you are also expected to:
1.
identify the three main parts of a compound microscope;
2.
describe the functions of each part of the microscope; and
3.
draw and label the compound microscope.
1
What I Know
Directions: Choose the letter of the correct answer. Write the chosen letter
on your Science activity notebook.
1.
A tool which can help see tiny objects and living organisms making them
look bigger.
2.
3.
4.
5.
a. Kaleidoscope
C. Periscope
b. Microscope
D. Telescope
Which of the following instrument would you use to see a plant cell?
a. Kaleidoscope
C. Periscope
b. Microscope
D. Telescope
He created powerful lenses that could see bacteria in a drop of water
a. Anton van Leeuwenhoek
C. Robert Hooke
b. Marcello Marphigi
D. Robert Kock
It holds and revolves the objective lenses.
a. Adjustment knob
C. Diaphragm
b. Aperture
D. Mirror
Which two parts of the light microscope magnify the image of an object?
a. Eyepiece and mirror
b. Eyepiece and objective
c. Objectives and mirror
d. Objectives and diaphragm
6.
Which among the statements below best describe the diaphragm?
a. It regulates the amount of light reflected to the object be viewed.
b. It reflects light from the mirror, object to be observed and lenses.
c. It changes the amount of light reflected.
d. It focus the specimens in the glass slide.
2
For items 7-10, refer to the diagram of a compound microscope below.
Nosepiece
Mirror
7.
C
Eyepiece
D
Coarse
Adjustment
Knob
E
Arm / Base
A
B
Which of the parts function as magnifying part?
A. Base
C. Mirror
B. Coarse Adjustment Knob
D. Ocular Eyepiece
For items 8-9, refer to the given choices below.
A. Base
C. Nosepiece
B. Coarse Adjustment Knob
D. Ocular Eyepiece
8.
What the name of the part labelled A?
9.
Which part allows you to see a clear and magnified image of the
specimen?
10.
The part labelled E in the diagram are ______.
a. Objective lens and the revolving nosepiece
b. Eyepiece and the objective
c. Mirror and the eyepiece
d. Base and arm
3
For numbers 11-15, use the letters in the figure to answer the question.
A
D
E
F
B
C
G
H
11. It facilitates the changing of objectives.
12. It supports the body tube.
13. Which connects the eyepiece to the revolving nosepiece.
14. This raises and lowers the body tube and with the objectives.
15. It reflects light up to the diaphragm, object to be observed and lenses
4
Lesson
1
Parts of the Compound
Microscope
What’s In
Activity 1:
“CLASSIFY ME”
Directions: Classify the following into the level of organization to which they
belong. Select your answer(s) from the box below. Write your answer in your
science activity notebook.
A. SPERM
B. LIVER
C. BLOOD
D. MUSCLE FIBER
E. GROUP OF ORGANS TRANSPORTING MATERIALS IN
THE BODY
ORGAN
TISSUE
CELL
ORGAN SYSTEM
5
What’s New
Activity 2:
4 PICS 1 WORD
Directions: Look at the four (4) pictures and fill in the missing letters to form a
word. Write your answer in your Science activity notebook.
+
MI
+
S
+
C
C
6
What is It
A microscope is a tool which can help you see tiny objects and living
organisms. It comprises of three major parts based on their functions: magnifying,
illuminating and mechanical parts.
Mechanical Parts – part of the compound
microscope that is used to support and
adjust other parts.
1. Base
2. body tube
3. coarse adjustment knob
4. fine adjustment
5. inclination Joint
6. stage
7. stage clip
Illuminating Parts – part of the microscope
which supplies light and regulate light
towards the focus specimen.
1. diaphragm
2. stage condenser
3. mirror
Magnifying Parts – part of the compound microscope that the specimen in
focus appears larger.
1. eyepiece
2. objective lenses
Scanner
Low power objective
High power objective
Oil immersion
7
Parts and Function of the Microscope
Coarse
adjustment knob
It allows the
movement of the
tube upwards or
downwards.
Ocular / eyepiece
It is a lens that is
attached to a draw
tube.
Body Tube / Draw
Tube
It is a tube that
separates the
objective and the
eyepiece and
assumes
continuous
alignment of the
optics.
Fine adjustment
knob
It is used to bring
the specimen into
sharp focus under
low power and is
used
for
all
focusing
when
using high power
lenses.
Revolving nosepiece
Arm
HPO
LPO
It is a curve shape
that supports the
body tube, it is for
grasping in
holding the
microscope in
transporting.
Objectives: HPO,
LPO, Oil Immersion
Inclination Joint
It connects the
arm to the base. It
helps incline the
microscope for a
more comfortable
viewing.
Base
It provides support
to the microscope.
Oil
Immersion
It is responsible in
holding the
objective lenses
(HPO,LPO,
scanner). It
facilitates the
changing of
objectives.
Stage clip
It holds the glass
slide in place.
Mirror
It allows the light
to pass through
the hole in the
stage and
illuminate the
specimen.
8
It is responsible in
holding the
objective lenses
(HPO,LPO,
scanner). It
facilitates the
changing of
objectives.
Stage
It is a flat surface
where the
mounted slide is
placed.
What’s More
ACTIVITY 2: WHAT AM I?
Directions: Column A are the specific parts of the microscope while Column B are
its
classification
(mechanical,
illuminating
and
magnifying).
Supply
the
classification required in column B. The first one is done for you. Write your answer
in your science activity notebook.
Column A
Column B
Parts of a Compound Microscope
Classification
1. Objectives
Magnifying
2. Coarse
Adjustment knob
3. Stage
4. Mirror
5.Diaphragm
9
6.Stage Clip
7. Fine adjustment
knob
8. Body tube
9. Eyepiece
10.Revolving
nosepiece
If you get 9 out of 10 correct answers, you are awesome.
10
What I Have Learned
ACTIVITY 4: COMPLETE ME!
Directions: Select your answer(s) from the box below. Write your answer in your
Science activity notebook.
controls
Fine adjustment knob
arm
objectives
inclination joint
base
draw tube
supports
mirror
eyepiece
The compound microscope is classified into three main parts: Mechanical,
Illuminating and Magnifying. The mechanical part comprises of _______ which
holds the objectives and revolving nosepiece in place. The coarse adjustment knob
allows the movement of the tube upward or downward. On the other hand, the
______ brings the specimen into sharp focus.
In addition, the stage and stage clips _______ and holds the specimen in
place. Further, _______ provides ______ to the compound microscope while the
_______ is curved shape used for holding the compound microscope when
transporting. The _____ supports the compound microscope when it is in inclined
position.
The illuminating part consists of the ______ which allows light to pass
through the diaphragm and that ______ the amount of light. Further, the
magnifying part comprises of the _____ which is a lens that attaches to a body
tube. The specimens are magnified by the ______ which are classified into
Scanner, low power objective, high power objective and oil immersion.
11
What I Can Do
ACTIVITY 5: LABEL ME!
Directions: Draw and label the parts of the microscope. Draw it in your science
activity notebook and label each part numbered 1-14.
14
1
13
12
2
11
3
10
4
9
5
8
6
7
12
Assessment
Part I. Multiple Choice.
Directions: Choose the letter of the best answer. Write the chosen letter in
your Science activity notebook.
1. Which of the following is NOT a mechanical parts of the microscope?
A. arm
B. base
C. body tube
D. diaphragm
2. It is also known as the revolving device.
A. adjustment knob
B. nosepiece
C. objective lens
D. stage
3. It regulates the amount of light passing through the specimen.
A. arm
B. base
C. body tube
D. diaphragm
4. The following are the mechanical parts of the microscope EXCEPT:
A. arm
B. eyepiece
C. draw tube
D. nosepiece
13
5. He is known as the father of microscopic anatomy who discovered taste
buds and red blood cells.
A. Robert Hooke
B. Antoine van Leeuwenhoek
C. Marcello Marphigi
D. Robert Koch
6. How many objectives does the microscope have?
A. 1
B. 2
C. 3
D. 4
7. What is the function of the mirror?
A. It reflects light up the microscope.
B. It captures light from the wall.
C. It refracts light.
D. It bends light.
8. Josie is using a compound microscope to examine a drop of pond water.
Which objective will she use if she wants to see the greatest number of
organisms in her sample specimen?
A. High power objective
B. Low power objective
C. Oil immersion objective
D. scanner
14
Part II. Identification
Directions: Select your answers from the box. Write word/s only. Write your
answer in your science activity notebook.
10
EYEPIECE
FOCUS WHEEL
11
STAGE
12
DIAPHRAGM
13
OBJECTIVE LENS
14
15
LIGHT SOURCE
15
Additional Activity
ACTIVITY 6: MIX AND MATCH!
Directions: Match the parts of the microscope in Column A with its function in
column B. Write the word(s) in your answer in your Science activity notebook.
Column A
Column B
1. Mirror
a. holds the slide in place
2. Coarse
b. magnifies the object being
Adjustment
viewed
knob
3. Stage
c. reflects light through the
object
4. Objective
d. revolves
lenses
and
different lenses
16
carries
5. Fine
e. is the lens through which you
adjustment
look through
knob
6. Eyepiece lens
f. brings the object roughly into
focus
7. Nosepiece
g. brings the object into sharp
focus
8. Stage Clip
h. holds the glass slide in place
If you get 9 out of 10 correct answers, you are awesome.
Congratulations! You have successfully completed the module.
Please proceed to the next module and learn new lesson
17
What I Can Do
1. Body tube
2. Arm
3. HPO / High Power
Objective
4. Oil Immersion
5. LPO / Low Power
Objective
6. Stage clip
7. Base
8. Inclination joint
9. Mirror
10. Stage
11. Revolving
Nosepiece
12. Fine adjustment
knob
13. Coarse adjustment
knob
2.
What I have learned
1.draw tube
2. fine adjustment knob
3.supports
4.mirror
5.controls
6. eyepiece
7. objectives
8. base
9. arm
10.inclination joint
What I Know
1. A
2. A
3. B
4. A
5. B
6. H
7. A
8. C
9. B
18
ACTIVITY 6
1. Magnifying
2. Mechanical
3. Mechanical
4. Illuminating
5. Illuminating
6. Mechanical
7. Mechanical
8. Mechanical
9. Magnifying
10. Mechanical
10.D
11.B
12.D
13.Draw tube
14.E
15.H
What’s New
14. Ocular / eyepiece
MICROSCOPE
What’s More
1. Eyepiece - the lens through which you look
through
2. Coarse adjustment knob - brings the object
roughly into focus
3. Nosepiece 4. Objective lens - magnifies the object being
viewed
5. Stage - holds the slide in place
6. Fine adjustment knob- brings the object into
sharp focus
7. Mirror - reflects light through the object
Assessment
1. C
2. B
3. C
4. B
5. B
6. STAGE
7. DIAPHRAGM
8. OBJECTIVE
LENS
9. LIGHT SOURCE
10.FOCUS WHEEL
11.EYE PIECE
12. C
13. A
14. D
15. B
Answer Key
References
Books
===================================
Asuncion, Alvie J., et.al, Department of Education-Instructional Materials
Council Secretariat (DepEdIMCS), First Edition, 2013
Department of Education. Science &
Technology – Learner’s Manual.
Hwa, K.S., Sao-Ee, G., & Luan, K. S. Mt pals are here! 6A science.
(International Ed.). Singapore: Marshall Cavendish, 2010
Miller, K.R., & Levine, L. Prentice Hall biology. Upper Saddle River, NJ:
Pearson,
2006
Philippines. Department of Education. Science and Technology II textbook.
(Rev. ed.). Pasig City: Instructional Materials Development
Corporation. 2009
Reyes, V.F. & Alfonso, L.G.. The Microscope: Part 1, Manila, AlimarPhoenix Publishing House., 1979
Teaching Guide for Junior High School,First Edition, 2013
19
Links/Websites
Adam Johnson. Parts of the Microscope and Their Uses. April 28, 2018.
https://sciencing.com/parts-microscope-uses-7431114.html.
Retrieved May 26, 2020.
How to use microscope. Microbus.2020. www.microscope
microscope.org/activities/school/microscope-use.htm
Retrieved on June 1, 2020.
Microscope Blog. 1222 McDowell Avenue, Roanoke, VA
24012.https://www.microscope.com/compound-microscopeparts.Retrieved June 2, 2020
Microscope parts and functions.Amscope.2020.https//www.
Amscope.com/cobblearning.net/dist/3/4204/files/2018/parts-of-theMicroscope-103b21p.pdf.Retrieved May 26, 2020.
Microscope 101-General Knowledge.Microscope LLC.
https://www.microscope.com/education-center/microscopes101/history-of-microscopes
ScienceQuiz.net.http://www.sciencequiz.net.weebly.com.Retrieved June
27,2020
Shannan Muskopf. Microscope Introduction “e” lab. August 25, 2018.
www.biologycorner.com/bio1/microscope.html Retrieved on June 1,
2020.
20
21
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Department of Education – Region 10
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