WEEK 7 Grade-Learning Area G10-Science Student Teacher Prince Andrei D.

Tejada
Quarter 2 Date November 4-5, 2024
I. LEARNING “Apply ray diagramming techniques in describing the characteristics of images formed in lenses
COMPETENCIE S10FE-IIg-51.”
S/ Learning Objectives:
OBJECTIVES 1. Define the refraction of light in lenses.
2. Differentiate the convex and concave lenses.
3. Appreciate the important applications of convex and concave lenses.
II. CONTENT Module 2: Optics
Refraction in Lenses
A. LEARNING Learner’s Material for Grade 10 pages 53-59
RESOURCES ADM Module pages 13-16
B. PROCEDURES
INTRODUCTION Daily Routine
1. Prayer
2. Greetings
3. Checking of Attendance
4. Kamustahan

ACTIVITY
Activity 1: Remember what’s LOST!
Directions: Describe the LOST of the image in the ray diagram.

L – at C
O – inverted
S – same size
T – real image

L–
O – No Image
S – is Formed.
T–

L – inside the mirror

O – upright
S – bigger
T – virtual image

L – between V and F
O – upright
S – smaller
T – virtual image

MOTIVATION
 What is the object? How does an eyeglass work? What type of lens is used in
eyeglass?

DEVELOPMENT Activity 2: Re-Fill!

Directions: Guided by the word pool, fill in the blanks with words that best fits the definitio
of the following terms.
converge convex thinner
bending concave density
thicker transparent real image

1. Refraction is the bending or change in direction of light when it passes from one
medium to another with a different density, like from air to water. This happens
because light travels at different speeds in different materials.
2. A lens is a transparent object, usually made of glass or plastic, with curved surfac
that bend light rays to either converge (focus) or diverge (spread out).
3. A convex lens is a lens that curves outward and causes light rays to converge
(come together) at a focal point. It is thicker in the center than at the edges and is
often used to magnify objects.
4. A concave lens is a lens that curves inward and causes light rays to diverge (sprea
out). It is thinner in the center than at the edges and is used to correct vision or
make objects appear smaller.

Activity 3: Con-what?
Directions: Tell whether the it is a concave or convex lens.

1. This type of lens is shaped outwards.

2. Meanwhile, this type of lens is curved inwards.
3. It is thicker in the center than at the edges.
4. It is thinner in the center that at the edges.
 5. With its thin center, the incident ray hitting the lens diverges as it refracts.
6. With its thick center, the incident ray hitting the lens converges as it refracts.
7. It is often used to magnify objects.
8. Usually, it is used to correct vision or make objects appear smaller.

Activity 4: Refract and Explore!

Directions: Create a Venn Diagram on the difference of a concave and convex len
Then, answer the following guide questions.

Concave Convex
Lens Lens

Needs
Criteria Excellent (5) Good (4) Satisfactory (3)
Improvement (2)
Most Some Many
Accuracy All characteristics characteristics are characteristics are characteristics are
are correctly placed. correctly placed. correctly placed. incorrectly placed
All relevant Most relevant Some relevant Few relevant
Completeness characteristics are characteristics are characteristics are characteristics are
included. included. included. included.
The Venn diagram is
Clarity and clear, well- The Venn diagram The Venn diagram The Venn diagram
Organization organized, and easy is mostly clear and is somewhat clear is unclear and
to understand. organized. and organized. disorganized.
The presentation is The presentation is
engaging, The presentation is somewhat The presentation
Presentation
informative, and mostly engaging engaging and is not engaging or
well-delivered. and informative. informative. informative.

Guide Question:
1. How is the shape of a convex lens different from a concave lens?
2. What are some real-world applications of convex and concave lenses?

ABSTRACTION
Activity 5: Blank Space!
Directions: According to our lesson, fill in the blank to complete the conclusion.
___(1)___ is the bending or change in direction of light when it passes fro
one medium to another with a different density, like from air to water. A __(2)__ is
transparent object, usually made of glass or plastic, with curved surfaces that be
light rays to either converge (focus) or diverge (spread out).
A convex lens is a lens that curves ___(3)__ and causes light rays to
converge (come together) at a focal point. It is __(4)__ in the center than at the
edges and is often used to magnify objects.
A concave lens is a lens that curves __(5)__ and causes light rays to diverg
(spread out). It is __(6)__ in the center than at the edges and is used to correct
vision or make objects appear smaller.
ENGAGEMENT Eyeglasses work by bending light to help focus
images correctly on the retina, the part of the eye
that senses light. If someone's vision is blurry, it’s
often because light doesn’t focus perfectly on their
retina.

For nearsighted people (who see close-up things

clearly but far-away things blurry), eyeglasses with
concave lenses spread out light so it focuses
correctly at the back of the eye.
For farsighted people (who see far-away things clearly but close-up things blurr
eyeglasses with convex lenses bend light inward to focus properly on the retina.

ASSIMILATION Activity 6
The students will answer the five-item quiz in a one-fourth sheet of paper.
Direction: Write the letter of the correct answer.
1. What is refraction?
a. bending or change of the direction of light
b. bouncing back of light in different direction
c. twisting or change of the direction of light
2. What type of non-luminous object are lenses?
a. Opaque b. Transparent c. Translucent
3. What is the type of lens that is thicker on the middle and
converges light in the focus?
a. Concave b. Convex
4. It is thinner on the middle and it diverges light.
a. Concave b. Convex
5. What type of lens are used if the patient is nearsighted
or has hyperopia?
a. Concave b. Convex
III. REMARKS
IV. REFLECTI On your Notebook, write your insights about the lesson using the prompts below.
ON I have learned that _________________________.
I would like to know more about _______________.
I enjoyed _________________________________

Prepared by ꓽ

PRINCE ANDREI D. TEJADA

Student Teacher

Checked by ꓽ

LORENA M. DE CASTRO
Science 10 - Teacher

ROCHELLE C. SILVANO, MAT

Master Teacher I

CHRISTIAN JAMES A. SACRAMENTO, Ph.D.

Head Teacher I

Noted by ꓽ

EDITH SA. DELOS SANTOS, Ed.D

Principal IV