St. Joseph College of Bulacan San Jose Patag, Sta. Maria, Bulacan
Detailed Lesson Plan in Science VI I- Objective: Identify stars according to color, size and brightness. II- Learning Objectives: A. Subject Matter: “Characteristics of Stars” 1. Concept Stars vary in color, size and brightness. Stars maybe blue, white, yellow, red and black in color. In size, some stars are bigger or smaller than others. Not all stars that appear at night shine with the same brightness. 2. Process Skills Observing, Communicating and Classifying B. Reference: Building Knowledge in Science and Health VI pp. 189-191 Into the Future: Science and Health VI pp. 245-254 C. Materials: puzzle (star), picture, dye, cotton, instructional device D. Value Focus: Appreciate the works of God III- Learning Procedure: A. Preliminary Activities 1. Prayer 2. Greetings B. Developmental Activities Teacher’s Activity Student’s Activity 1. Review Class, what device is use to magnify and view distance objects?
Ma’am, we call it Telescope.
Correct. Can you give me examples of a telescope?
The different types of telescope are: 1. Refracting telescope 2. Reflecting telescope 3. Spectroscope 4. Radio telescope
That’s right. 2. Motivation Class, do you want to play a game?
Yes Ma’am
Good, Now I will group you into four. Each group will select a leader and a secretary. (grouping the class)
Group 1- Betelgeuse Group 2- Polaris Group 3-Sirius Group 4- Capella
Have you already selected you leader and secretary?
Yes Ma’am
Just a reminder, when were having a group activity, discuss with your group mate silently. Avoid disturbing other groups. Do you understand?
Yes Ma’am
The leaders and the assistant will represent
each group. I have here a jigsaw puzzle, what your going to do is to arrange this puzzle to form a figure. I will just give you fifteen seconds to assemble the puzzle. The representatives, please come forward.
(Selected students come forward)
Your time starts now! (Selected students assemble the puzzle) Wow, very good. Give our winning group a firecracker clap.
1.2.3.4….clap
Class, what figure is form in the puzzle?
a “Star”
Do you know what a star is?
A Star is a ball of fire that can be seen during at night.
That’s right Aside from that?
Stars are huge ball of gas made of hydrogen and helium.
Exactly. Can we consider our sun as a star?
Yes ma’am.
Why do you think so?
The sun is the nearest star in our planet.
Any other answer?
The sun gives off light and energy to our planet.
That’s correct. 3. Presentation May I call a volunteer?
A student comes forward to volunteer.
I want you to dip the clean cotton to the solution in the container. Gently rub the moisten cotton to the cartolina.
The student follows the instructions.
What word/words came out from the box after rubbing the cotton from it?
“The Stars and its Characteristics”
That’s right. You may now go back to your sit. Group Capella and Betelgeuse, please read.
The Stars and its Characteristics.
The Star is a huge ball of gas made up of hydrogen and helium. The stars main source of energy is by itself. Helium provides the fuel that produces the light energy of the star. 4. Discussion There are three main characteristics of a star. The first one is the Color. Have you sometimes observe the sky and watched the stars at night? What have you observe? Do all stars have the same color?
Correct. Stars have different colors.
Yes Ma’am.
I notice that the stars have different colors. Some are blue, others are red and also there is yellow and white one.
What do you think is the reason why the stars have different colors?
Ma’am, I think it’s because of the temperature.
Precisely. The color of the stars relates to its temperature. The hottest star is bluish in color. Next to its temperature is the white one, followed by the yellow star. Our sun is a star. The color of the surface is yellow. Next to the yellow star is the red star. Mostly, what we see in our sky during night time are red stars and they are the coolest stars. When the star dies because it has no more fuels to burn, it becomes death star. That is black in color or also known as the black hole. Do you know what a blackhole is?
A black hole has a very huge gravitational pull that it sucks all the near objects around it.
Very Good. Next characteristic of a star is the Brightness. Do all stars shine the same?
No Ma’am.
Have you seen lines of lamp post in your baranggay or street?
Yes Ma’am.
Okay, let’s assume that the lamp posts in the streets are the stars. What do you observe on the lamp posts that are near you?
They are much brighter and look bigger.
How about the lamp post those are very far? Are they brighter or looks dimmer afar?
The lamp posts that are far usually look less bright because they look smaller afar.
Precisely. There are two factors that determine the brightness of a star. a. Luminosity- measures how much the energy it gives off per unit in time. b. Distance- measures how far the star is located from us. The third characteristic of stars is Size. Do all stars have the same size? Very Good. Stars have different sizes. What happened if the star is bigger? Does it have shorter or longer life?
No Ma’am, stars have different size. There are big stars, medium stars and dwarf stars. I think Ma’am it has shorter life. Big stars consume their energy more because of their size.
Precisely. There are different sizes in stars. The size affects the brightness of the star. If the star is too big, it will consume lots of energy. The bigger the star is, the shorter the life span is. Do stars can also be called distant stars? Why? That’s it. Another question, why do you think we cannot see the stars during day time? Do stars only show at night?
Yes, because our sun is a star, so the stars that is far away from us can be called distant suns.
The reason is that the light of the sun outshines
the brightness or the light of the stars. That is why during daytime, we cannot see stars when the sun is still up there in the sky. Very Good. Why do you think the stars twinkle? What about our atmosphere? What’s the relation of the atmosphere in the twinkling of the stars?
Ma’am, this is because of our atmosphere.
Because the atmosphere is moving so the light refracts from it causing the stars to twinkle.
Exactly. Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere. But the light of the stars reach our planet in straight pattern. The twinkling of stars is called Stellar Scintillation. 5. Generalization So, what can you say about stars? What is a star?
Stars are huge ball of fire made up of hydrogen and helium. The stars are also called distant sun because the sun is also a star.
What are the main characteristics of a star?
These are Color, Brightness and Size.
What about the Color?
The color determines the temperature of the star.
Exactly. What are the different colors of the stars, from hottest to coolest?
blue-white-yellow-red-black(black hole)
Excellent. How about the Brightness? What are the factors that affect it? Luminosity and Distance. What does luminosity measures?
Luminosity measures the energy that the stars give off per unit in time.
What about Distance?
Distance measures how far the star is located from us.
Very Good. What is the last characteristic of the star? And what does it tell?
Excellent. Why do stars twinkle?
The Size. It also affects the brightness and the life of a star. The bigger the star is the shorter life span it has. Because the stars light is being refracted or bent when it reach the earth’s atmosphere. So we can see the stars twinkle.
Very Good. 6. Application What do you think will happen if the stars are too near to our planet? Or there are more than two suns in our solar system?
Probable answers: The earth will die because of excessive heat coming from more than two suns near us. or The planet will explode or melt like an ice cream.
IV- Evaluation Identify what is being described in the given items below. ____________1. Measures how far the star is located from us. ____________2. A gaseous ball of fire made up of helium and hydrogen. ____________3. The scientific name for twinkling of stars. ____________4. The color of the hottest star. ____________5. Measures the energy it gives off per unit in time. ____________6. It is also called “death star”. ____________7. The movement of the atmosphere on earth. ____________8. Nearest star on our planet. V- Assignment: Observe the sky during night time. Answer the following on your notebook. 1. What color of the star has the majority in the sky? 2. Do the stars shine the same? 3. Why the stars called distant sun?
_________________________ Mr. Cherry Mar B. Galvez Critic Teacher
_________________________ Daisy Rose P. Escanilla Student- Teacher
______________________ Mr. Francisco M. Bonifacio Jose Juan Serapio Elementary School Principal
