This semi-detailed lesson plan outlines a mathematics lesson on rounding decimals to the nearest tenths, hundredths, and thousandths. The lesson includes preparatory activities like drilling on rounding and a decimal-based game. Students will then work through example problems rounding decimals and discuss the rules and process for rounding. Finally, students will complete an evaluation rounding additional decimals to the specified places.

1. Semi-Detailed Lesson Plan in Mathematics 6
Name: Jane S. Ologuin
School: Nazareth Elementary School
District: Sergio Osmeña II District
I. Objective: Round decimals to the nearest tenths/ hundredths/thousandths
II. Subject Matter: Rounding decimals to the nearest tenths/hundredths/thousandths
Reference: Mathematics in Everyday Life p. 101-104
PELC II F 2.2
Materials: sheets of blank manila paper, flashcards
Value: speed and accuracy
III. Procedure:
A. Preparatory Activities
1. Drill on rounding off: mental computation
2. Motivation:
Agawan Panyo Game. (Involving decimals). Set the games and its rules to be
followed.
B. Lesson Proper:
1. Presentation:
Luis climbed a 483 meter hill. If there are 1000 meters in 1 kilometer, what part of
the hill did Luis climbed? Rounded to the nearest hundredths, what number is this?
2. Discussion:
1. What is asked in the problem?
2. What are the given facts?
3. What is process to be used?
4. What is the mathematical sentence?
5. What other thing is asked in the problem?
6. Why is the difference 517 rounded to 500?
7. What rule did you know?
3. Generalization:
Add 1 to the digit in the rounding place if the number to the right is 5 above. If it is
less than 5, round down and drop all the digits after the rounding place.
4. Application
Round off the following number.
1.) 6.540
2.) 7.35
3.) .3982
4.) .055
5.) .64
IV. Evaluation:
Round the following decimals to the nearest place value indicated.
1.) .36 2.) .823 3.)35.0453 4.).608 5.) 1.736
V. Assignment: round 85.81267 to the nearest place indicated.
Tenths_________ hundredths__________ thousandths__________________

2. Semi-Detailed Lesson Plan in Science 6
Name: Jane S. Ologuin
School: Nazareth Elementary School
District: Sergio Osmeña II District
I. Objective: Observe the stars as to color, size and brightness.
II. Subject Matter: Stars,: Their Size, Color and Brightness
Reference: TM Into the Future pp. 153-154
Science and Health VI, p. 247
Materials: a pair of binoculars
Value: appreciate the works of God
III. Procedure:
A. Preliminary Activities:
1. Checking of Assignment/review
What are the different instruments used by astronomers to gather information
about stars?
B. Developmental Activities
1. Motivation:
You have sometimes watched stars at night. What are some of your observations?
2. Presentation
Observe the stars in a clear night sky. Do they appear to twinkle? What makes them
twinkle?
What conclusion you can make about stars?
3. Discussion/Analysis
a. The sun is a star.
b. Stars produce their own light. Those that appear at night do not show the same
brightness. Some blink continuously, others flicker weakly.
4. Concept Formation/ Generalization
What characteristics of the stars can be observed at night?
5. Application
In terms of weather condition, what does a starry night mean?
IV. Evaluation:
1. Besides yellow, identify other color of stars.(1-3)
2. Describe how stars may differ as to size.
3. Describe how stars differ as to brightness.
V. Assignment:
Observe a group of stars. Draw your observation in a bond paper.
1. In what ways stars differ?
2. Why do we see stars only during the night?

3. Semi-Detailed Lesson Plan in Science 6
Name: Jane S. Ologuin
School: Nazareth Elementary School
District: Sergio Osmeña II District
I. Objective: Describe the relationship between the brightness as seen in thes distance of stars
from the earth.
II. Subject Matter: Characteristics of Stars
Reference: TM Into the Future pp. 1556-158
Science and Health VI, p. 248
Materials: penlights, notebook
Value: attentiveness
III. Procedure:
A. Preliminary Activities:
1. Checking of Assignment/Review
How is the color of a star related to its temperature?
B. Developmental Activities
1. Motivation:
Why do some stars seem to look very faint?
2. Presentation
2.1. Activities: Pre-assign the activities, one or two days before class discussion)
3. Discussion/Analysis.
Distance affects the stars apparent magnitude. Other stars are very far away from
the earth. Although their brightness is greater than that of the sun; we cannot see
them during the daytime. The farther away the star is from the earth, the lesser is
the apparent brightness that we see.
4. Concept Formation/ Generalization
How does distance affect the brightness of a star?
5. Application
Cite other explanations why stars appear in different brightness?
IV. Evaluation:
Explain in one or two sentences the relationship between distance and brightness of a
star.
V. Assignment:
Explain: Why o we consider the sun as the brightest star?