WLP Q2 W3 Sci7 Llamas
WLP Q2 W3 Sci7 Llamas
WLP Q2 W3 Sci7 Llamas
Department of Education
REGION IV-A (CALABARZON)
CITY SCHOOLS DIVISION OF BACOOR
CITY OF BACOOR NATIONAL HIGH SCHOOL-SALINAS
Camella Homes, Salinas 2D, Bacoor City, Cavite
Email: 305686@deped.gov.ph
Telephone Number: (046) 238 – 9786
A. Elicit
Scrambled Letters
Directions: Listed below are parts of the microscope
that are scrambled. Mix the letters to come up with the
right answer. Write your answer on a separate sheet of
paper.
1. ETSAG = ____________________________
2.IEECYEEP=___________________________
3.GMAAIDPHR=_________________________
4.YODBBTUBE=_________________________
5. RMA = ______________________________
6.EOSNEEIPC=__________________________
7. BSEA = ______________________________
B. Engage
What Am I?
Directions: Identify the words being describe. Choose
the answer from the box below. Write your answer on
a separate sheet of paper.
C. Explore
1. Place the slide on the stage and view in low power.
Center the “e” in the field of view. Carefully and slowly
move the coarse adjustment knob until the
image appears clear. Draw what you see. Move the
slide to the left. What happens? Move the slide to the
right. What happens? Move also the slide up and down
and observe what happens to the image.
2. View the specimen in high power. Use the fine
adjustment only to focus (this will keep the glass slides
from breaking and the objective lens from scratching).
3. These are the images before and after examining
under a microscope.
Guide Questions:
1. Did the letter appear in the same orientation when
viewed through the
microscope?
2. When you move the slide to the right what direction
does it appear to move
under the microscope?
3. What happened to the image when you switched
objectives?
Procedures:
1. Set aside a clean microscope slide.
2. Carefully cut away a small, single layered piece of
onion (1-2 cm wide).
3. Peel the thin layer of skin (membrane) from the
inside surface of your piece of onion. Forceps may help
with this. The membrane looks a bit like soft Scotch
tape and should separate relatively easily from the
inside surface of the onion slice.
4. Place section of membrane carefully on the
microscope slide, trying to keep it as flat as possible.
5. Apply a couple of drops of iodine solution to the
section. Wait 2 minutes for the stain to develop before
positioning a cover slip over the section.
6. Place the slide first under scanning objective, then
low power objective and finally under high power
objective and observe the onion cells. *note: Be
careful, when focusing the microscope, not to break
F. Evaluate
Directions: Read the paragraph carefully and identify
the correct words that fit in the given sentences in the
box below. Write your answer on a separate sheet of
paper.
G. Extend
Microscope is one of the most important inventions in
the history of science. Without this instrument, we
would not be able to see and identify very small
organisms even though they are just around us.
3 describe the Proper Way of The teacher will send a soft copy of the
(November 23, proper ways Handling a Microscope activity to the learners via group chats.
2022) of handling a
microscope. The microscope is a highly important
instrument with a wide range of applications.
It allows scientists and students to study a
range of microorganisms,
cells and structures, playing an integral role
in both research and diagnostics. To
lengthen its life, you need to know the
proper care and maintenance of the
microscope.
A. Elicit
Mix and Match
Directions: Listed below are parts of the microscope
that are scrambled. Mix the letters in the column B to
come up with the right answer and match it to column
A which is their function. Write the letter only on a
separate sheet of paper.
B. Engage
Directions: Write TRUE if the statement is correct and
FALSE if the statement is
wrong. Write your answer on a separate sheet of
paper.
1. When you move the slide to the right the image
moves to the left.
2. When you move the slide inward, the image will
move away from you.
3. Use the low power objective before using the high-
power objective.
4. Clean all glass surfaces with tissue paper.
5. Adjust the diaphragm under the stage so that a
medium amount of light gets
through.
C. Explore
Activity 1
Magnification is the measure of the ability of lens to
produce a bigger image of an object. A good image is
obtained when the amount of specimen detail is also
increased. To determine the total magnification,
multiply the magnification of eyepiece
by the objective lens.
Total Magnification
Directions: Fill in the charts below. Calculate the total
magnifications for the examples given, then calculate
the total magnification using each of the objective
lenses on microscope scenario. Write your answer on a
separate sheet of paper.
*Eyepiece lens magnification x objective lens
magnification = Total Magnification
Microscope Scenario:
The microscope has an eyepiece magnification of 10x
and has 3 objective lenses namely scanning, low power
and high power. Scanning objective lens has a
magnification of 4x, low power objective lens has a
magnification of 10x and high-power objective lens has
a magnification of 40x.
Directions: Fill the magnification of eyepiece and
objective lenses base on the scenario and compute for
the total magnification. Write your answer on a
separate sheet of paper.
D. Explain
Magnification
The two lenses that determine the magnification of the
microscope are the eyepiece lens and the objective
lens. Each has a number on it that signifies its
magnification.
Total Magnification
The total magnification of an image is quite simple – it
is the product of the ocular lens magnification times
the magnification of the objective lens you are using:
F. Evaluate
G. Extend
5 Creating a DIY DIY Microscope The student will continue to do the Do-It-
(November 25, Microscope Yourself Microscope.
2022) Deadline: November 28,2022
INDEX OF MASTERY
Remarks
G7- Aroma
G7- Banaba
G7- Kamagong
G7- Narra
Remarks