GRADES 1 to 12

        DAILY LESSON LOG

School:

Grade Level:

VI

Teacher:

Learning Area:

SCIENCE

Teaching Dates and Time:

WEEK 4

Quarter:

4TH QUARTER

MONDAY

TUESDAY

WEDNESDAY

THURSDAY

FRIDAY

I.OBJECTIVES

Describe the relationship between color and temperature of a star.

Describe the relationship between the brightness as seen in the distance of stars from the earth.

Describe the relationship between the brightness as seen in the distance of stars from the earth.

Explain why star distances are measured in light year

Answer the questions correctly and honestly

A. Content Standards

Relationship Between  the color and temperature of a Star

Characteristics of Stars

Relationship Between the Brightness and Distance of a Star

Characteristics of Stars

Relationship Between the Brightness and Distance of a Star

Why Star Distances are Measured in Light Years

B. Performance Standards

C. Learning Competencies/ Objectives

Describe the relationship between color and temperature of a star.

Describe the relationship between the brightness as seen in the distance of stars from the earth.

Describe the relationship between the brightness as seen in the distance of stars from the earth.

Explain why star distances are measured in light year

II.CONTENT

The Size, Color and Brightness

The Size, Color and Brightness

The Size, Color and Brightness

The Size, Color and Brightness

WEEKLY TEST

III. LEARNING RESOURCES

graph showing the age, color and surface temperature of stars

Penlights, notebook

Chart of Star Magnitudes

Globe, ball

A. References

1.Teacher’s Guide pages

Into the future: S&H,p. 156-158

Into the future: S&H,p.

Into the future: S&H,p. 153-156

Into the future: S&H,p.

2.Learner’s Materials pages

3.Textbook pages

Into the future: S&H,p. 251-253

Into the future: S&H,p.

Into the future: S&H,p. 247-250

Into the future: S&H,p.

4.Additional Materials from Learning Resource(LR)portal

B. Other Learning Resources

downloaded workbook p.134(5775Reverse the Education Crises)

Downloaded LP, p.132

downloaded workbook p.131(5775Reverse the Education Crises)

Downloaded LP, p.133

downloaded workbook p.136-137(5775Reverse the Education Crises)

Downloaded LP, p.133

downloaded workbook p.138-139(5775Reverse the Education Crises)

Downloaded LP, p.135

IV.PROCEDURES

A. Reviewing previous lesson or presenting the new lesson

What is star's apparent magnitude? It's absolute magnitude?

How is the color of a star related to its temperature?

How is the color of a star related to its temperature?

What is the relationship between brightness and distance of a star?

Short Review

B. Establishing a purpose for the lesson

Have you looked closely at the colors of a flame

Why do some stars seem to look very faint?

Why do some stars seem to look very faint?

How do we measure the distance between one end of the classroom and another?

Between one jeepney station to another? Between towns?

Between countries? Between heavenly bodies?

Giving  of instructions

C. Presenting examples/ instances of the new lesson

1. Activity

a. Present the table on Activity 7.5.

b. Let the pupils identify the stars; their colors and surface temperature.

c. Rank the stars from the hottest to the coolest.

d. Relate the color of the hottest star and coolest star.

1. Activities: (Pre-assign the activities, one or two days before class discussion)

Activity 1

Do this activity at night with three of your friends, if possible.

1. Get 3 penlights. Give one to each of your friends. Let them stand in the same direction, one 20 meters away from you, the second 40 meters away and the third 60 meters away.

2. Tell them to point their penlights at you.

Directions: Perform the activity to demonstrate the relationship between the brightness and the
distance of a star from the Earth. Answer the questions that follow.

1. Ask a friend to stand at the end of a long hall.
2. Tell you friend to stand on different marked positions that are one, two, three, four, five meters apart from you.
3. Ask your friend to move from one position to another while you hold a big lighted flashlight in astationary place.
4. Tell your friend to describe the brightness of the light as he/she moves farther from the flashlight.

Activities

1. Explaining the enormous distances between the earth and stars.

2. Defining a light year.

The unit used in measuring the distance of stars is called light year. A light year is the distance traveled by light in one year.

D. Discussion new concepts and practicing new skills #1

• What are the colors of the stars?

        • Why do you think stars are of these colors?

2.Reading of text 251-253

Describe the light you see from each of the penlights. Which one looks brightest? Why?

Which one looks faintest? Why?

Exchange places for everyone to experience being a viewer.

1. At what distance was the light brightest? Dimmest?
2. What factor determines the apparent brightness of light?
3. If the flashlight were to be changed to a penlight, would you get the same result? Why or why
not?

Point out that light year is more convenient to use than kilometers because to use the latter is more laborious and overwhelming

E. Discussing new concepts and practicing new skill # 2

F. Developing mastery

(Leads to Formative Assessment 3)

G. Finding practical applications of concepts and skills in daily living

How do you know a given star is young or old?

Cite other explanations why stars appear in different brightness.

Cite other explanations why stars appear in different brightness.

What do you think will happen if the sun is four light years away, or as far away as Proxima Centauri? Would the earth look dark or bright?

H. Making generalizations and abstractions about the lesson

How is the color of a star related to its surface temperature and to its age?

-The color of a star is related to its temperature.

-Bluish stars are the hottest, followed by white and yellow stars.

-Red stars are the coolest.

-A star's color depends on its surface temperature.

-The age of stars can be determined by their color.

-Stars are distant suns.

How does distance affect the brightness of a star?

Without considering the size of a star, the farther the star is from Earth, the fainter it is.

The nearer it is from Earth, the brighter the star is.

Why are star distances measured in light years?

A light year is the distance traveled by light in one year. One light year is approximately 9.5 trillion kilometers.

I. Evaluating learning

Directions: Describe the relationship between color and temperature of stars by
underlining the correct answer inside the parenthesis.
1. All stars emit all colors, but the hottest stars emit more (red, blue, white) and less
(red, blue, white) radiation.
2. The hottest stars have bluish-white color with a temperature of
(11,000 C to 30,000 ⁰C | 10,000 C to 20,000 ⁰C).
3. The hottest stars have (red, yellow, blue) color.
4. Red stars are considered to be the coolest with surface temperature of
(20,000 ⁰C | 3,000 ⁰C | 4,000 ⁰C).
5. Yellow stars are moderately hot with a surface temperature of about
(5,000 ⁰C | 6,000 ⁰C | 7,000 ⁰C).
6. Stars emit a (little, large, tremendous) amount of heat and light.
7. The coolest stars have (red, yellow, blue) color.
8. As the stars grow older, their color gradually fades until the color becomes
(yellow, orange, red).

Multiple Choice: Choose the letter of the correct answer.

9.Which star is hottest?

a. Capella                c.  Rigel

b. Sun                d.  Betelgeuse

10. How do we classify our sun?

a. white star                c.   red star

b.         yellow star        d.   bluish-star

Explain in one or two sentences the relationship between distance and brightness of a star.

Directions: Encircle the letter of the correct answer.
1. Which of the following affects the brightness of stars when viewed from earth?
A. size           C. temperature
B. color          D. distance
2. The sun is just a medium-size star. Why is it that it seems to be the brightest?
a. it is the biggest star

B. it is the farthest star

C. it is the nearest star

D. it is the hottest star

3. Which of the following affects the brightness of stars when viewed from earth?
A. size           C. temperature
B. color          D. distance
4. The sun is just a medium-size star. But why is it that it seems to be the brightest?
A. it is the hottest star

B. it is the nearest star

C. it is the farthest star

 D. it is the biggest star
5. How are distances of stars measured?
A. kilometers      C. light year
B. mile                D. meters

(more questions found in TG)

Directions: Encircle the letter of the correct answer to the question.

1. Which of the following is used to measure the distances of stars?
A.mile              C.meter
B. kilometer    D. light year
2. Which of the following is the meaning of light year?
A. The distance traveled by light in 3 years.
B. The distance traveled by light in 2 years
C. The distance traveled by light in 1 year
D. The distance traveled in 9 months.
3. If Sirius is 2.7 light years away from earth, this means that …
A. It takes 2.5 years for the light coming from Sirius to reach us.
B. It takes 2.6 years for the light coming from Sirius to reach us.
C. It takes 2.7 years for the light coming from Sirius to reach us.
D. It takes less than a year for the light coming from Sirius to reach us.
4. Why did astronomers chose light year instead of kilometers to measure star distances?
A. It is the most convenient measurement to use.
B. It is the hardest way of measuring star distances.
C. It is the order from their head office to use light year.
D. It is the easiest way of measuring star distances.

5. Which of the following is the meaning of light year?
A. The distance traveled by light in 3 years.
B. The distance traveled by light in 1 years
C. The distance traveled by light in 2 year
D. The distance traveled in 9 months.

Test Proper

J. Additional learning

Assignment:

        Find  out the names of red super giants, red giants and white drawfts. Arrange the following in a table, like the one below.

V.REMARKS

Passing of papers, answering the questions, checking the answers, recording and interpreting the data

VI. REFLECTION

A. No of learners who earned 80% in the evaluation

B. No of learners who require additional activities for remediation who scored below 80%

C. Did the remedial lessons work? No of learners who have caught up with the lesson.

D. No. of learners who continue to require remediation

E. Which of my teaching strategies worked well? Why did these work?

F. What difficulties did I encounter which my principal or supervisor can help me solve?

G. What innovation or localized materials did I use/discover which I wish to share with other teachers?