This lesson plan for a 4th-grade science class focuses on the structure of the Earth, teaching students about its three layers: crust, mantle, and core. The lesson utilizes a boiled egg as a model to represent the Earth's layers and includes various interactive activities, such as discussions and worksheets. Assessment is conducted through quizzes and performance criteria to evaluate students' understanding of the Earth's structure.

1. LESSON PLAN
School : OWL School
Lesson : Science
Class/Semester : IV/2
Content : Earth Structure and Earth Surface
Time : 14.09 – 14.21
A. Competence Standard :
9 To understand the earth surface changing and sky object.
B. Basic Competence:
9.1 Describe the earth surface changing.
C. Indicators :
o Student can mention the earth’s layer ;
o Student can make an indication related to scale of earth width.
 Student character expectation : Discipline, respect, diligence, responsibility and
carefulness
D. Learning Materials:
o Boiled Egg
o Knife
o Visual Aid (attachment 1)
o White board
o Markers
o Globe
o Science book that related to grade IV
The Material:
Our Earth Structure
The earth is round like a ball. On the top of the earth there is a solid cold rock layers. Most of
earth layer is hot thick liquid which has different temperature depend on its depth. The
diameter of the Earth is 12,800 km. The earth has three layers. The outer layers called crust
its 16-60 km. The next layer called mantle. It is 2,900 km and it is 1,440˚C – 2,500˚C. It is
consist of melted rock. This layer is tough and hot. The inner layer called core. It is 6,800 km.
It is more than 4,000˚C. The geologist said, it is consist of hot metal and iron. The geologist,
haven’t dig the earth until the core of the earth yet. They use seismic wave to guess what is
inside our earth.
E. Model and Method:
Teaching and learning’s model : Contextual
Learning approach : Inquiry
Teaching and learning method : Speech plus Demonstration

2. F. Teaching and Learning Process
a. Pre-Teaching (2 minutes)
In apperception and motivation, teacher:
i. Ask the student about the earth:
1. Where do we live now?
2. What is the shape of the earth?
3. How big is the earth?
4. How deep is the earth?
5. What is inside the earth?
b. Whilst Teaching (10 minutes)
i. Exploration
In exploration, teacher:
1. Show the egg as the representation or the earth.
2. Cut the egg into two parts with knife.
3. Show the half of egg to the student and guide them to understand that earth layer
is just the same like the egg.
4. Show the visual aid (attachment 1)
5. Tell the student about the earth layers and its width.
6. Draw a line in the white board and make a scale on that. (represent the earth
layers width)
7. Engage the student with question and answer activity.
ii. Elaboration
In elaboration, teacher:
1. Give the student a work sheet (attachment 2)
2. Ask the student to fill the sheet
3. Guide the student to fill the work sheet
iii. Confirmation
In confirmation, teacher:
1. Asking and answering anything that student don’t know.
2. And student having conversation in order to straighten misunderstanding concept
and give reinforcement.
c. Post Teaching (3 minutes)
1. Making a conclusion that our earth consist of three layers, they are core, mantle and
crust. The core consists of metal and iron. The mantle is the middle layer of earth,
made of melted rock. The crust forms the rocky outer layer of earth. Deeper we go
inside the earth, the temperature became hotter.
2. Give homework:
Ask the student. “Where the rock comes from?” (For next meeting activity)
Ask student to bring some stones that they find near their houses.

3. G. Assessment
Assessment
Indicator Instrument Instrument Example
Technique
Mentioning the names Quizzes Quizzes Please mention the Earth
of earth layers questions layers! (3)
Which layer is the
thickest?
Which layer is the
slightest?
Which layers that have
the highest temperature?
Assessment Criteria Form
 PRODUCT
No. Aspect Criteria Score
1. Concept * All is correct 4
* Mostly correct 3
* Less correct 2
* All is wrong 1
 PERFORMANCE
No. Aspect Criteria Score
1. Knowledge * Knowledge 4
* Seldom using Knowledge 2
* Never using Knowledge 1
2. Practice * Practice actively 4
* Sometime active 2
* Passive 1
3. Attitude * Attitude 4
* Occasionally using attitude 2
* No attitude 1
ASSESSMENT FORM
Performance
No Student’s name Product Score Mark
Knowledge Practice Attitude
1.
2.
3.
4.
5.
NOTE:
Mark = (score: total max score) X 10.
There is remedial for student that cant passed the cumulative score.

4. Reference:
Earth. Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights
reserved.
______. (2009). National Geographic Society: Magma. kids.nationalgeographic.com
Tim SEQIP. September 2002. Buku IPA Guru Kelas 4 “Pembelajaran 2: Struktur bumi
dan permukaannya” (page 85-87)
Salatiga, 1 October 2012
Principal Science Teacher
Dra. Sulistyowati Msi. Yohana Setiawan
Lecturer Code: 65007 NIM: 29 2010 508

5. Attachment 1
Inside Earth
Earth is made of three layers. In the center is the core, containing an inner core of solid iron and an outer
core of liquid iron. The mantle is the middle layer of Earth, made of soft rock. The crust forms the rocky
outer layer of Earth.
© Microsoft Corporation. All Rights Reserved.
Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.
Teacher Handmade:
Front Back
Show the earth crack that is seen from the moon Show that the earth has three layers if it is cut in to two
parts. (crack, mantle, and core)
How to make teacher’s handmade:
1. Prepare three different colors of buffalo paper
2. Measure the guess diameter of each layers but you must know the real size to
make it more reliable.
3. Cut the crack layer and draw and color the map on it (biggest size)
4. Cut the mantle layer and stick it with glue it is only has max 5 mm different
(smaller size than the crack)
5. Cut the core, the smallest size and stick it.

6. Attachment 2
Student’s Work Sheet:
Name: _______________________
Our Earth’s Structure
Fill the blanks:
The diameter of The Earth is _________ km. It is consist of ___ layers.
a.) The first layer called ________. It is the outer layer, it is the slightest
layer. It is _______ km depth.
b.) The second layer called __________. It is the thickest layer. It is ______
km depth. It is made from ___________________. It is hot. The
temperature can reach _____________˚C.
c.) The third layer called __________. The diameter is _______ km. It is the
hottest layer of the earth because the temperature can be more than
_____˚C.