This lesson plan outlines two meetings to teach 9th grade mathematics students about the volumes of cylinders, cones, and spheres. In the first meeting, students will work in groups to derive the formulas for the volumes of cylinders and cones. They will complete worksheets and present their solutions. The second meeting focuses on deriving the formula for the volume of a sphere and having students practice solving related problems in groups. Assessment includes group work, presentations, quizzes, and homework.

1. LESSON PLAN
School : SMP Negeri 3 Surabaya
Subject : Mathematics
Grade/Semester : IX/1
Time : 4 x 40 minutes (2 meetings)
A. Standard Competency
2. Understanding the properties of cylinder, cone and sphere and determining
its size
B. Basic Competency
2.2 Calculating the surface area and volume of cylinder, cone, and sphere
C. Indicator
1. Find the formula of volume of cylinder cone and sphere
2. Solve the problems related to volume of cylinder, cone and sphere
D. Learning Objective
First meeting
1. Students are able to find the formula of volume of cylinder and cone
2. Given some problems related to volumeof cylinder and cone, the students
are able to solve the problems correctly.
Second meeting
3. Students are able to find the formula of volumeof sphere
4. Given some problems related to volume of sphere, the students are able to
solve the problems correctly.
E. Material
First meeting
The volumeof cylinder and cone
Second meeting
The volumeof sphere
F. Learning Model
First meeting
Cooperative Learning (GI)

2. Second meeting
Cooperative Learning (GI)
G.Learning Activity
First meeting
Introduction (± 5 minutes)
(Phase 1: Clarify goals and establish set)
1. Teacher generally presents the learning objective that is finding the formula
of volumeof cylinder and cone
2. Apperception: Leads the students to recall the material that had been learned
before and correspond with the material that will be discussed such as
volume of prism and the area of circle.
3. Motivation: Motivates the students by relating the material that being
discussed with real life situation, for example:
“To celebrate the independences day,
class IX-A will bring „tumpeng‟. They
make a tumpeng for 25 persons. and
they estimate for each person average
need 0,2 lrice. Calculate the height of
the tumpeng if they will bring the
tumpeng in a circle place that have
diameter 6 dm”
Main Activities (± 60 minutes)
(Phase 2: Present information)
1. Teacher reminds students about the volume of prism and circle. Then, the
teacher tells to students that they are going to find the formula of volume of
cylinder and cone.
(Phase 3. Organize students into learning teams)
2. Teacher divides the class into 5 heterogenic groups.
3. Teacher gives a worksheet to each group and asks them to do the
worksheet.

3. 4. Teacher tells the students that after doing the worksheet they have to
present their work in front of the class.
(Phase 4. Assist teamwork and study)
5. Teacher assists each group as they do their worksheet.
6. One of each groups presenting and explaining their group report and some
student in other groups give comment to it
7. The students and the teacher discuss about the right answer
8. The teacher asks to the students about the first problem solving
9. The students answer problems by their own ways
(Phase 5. Test on the materials.)
10. Teacher give a quiz to students to check students understanding
Closure (± 15 minutes)
(Phase 6: Provide recognition)
11. Teacher gives feedback and appreciates the result of every group.
12. Teacher gives a reward to the best group that has the best score.
13. Teacher give home work to the students.
Second meeting
Introduction (± 5 minutes)
(Phase 1: Clarify goals and establish set)
1. Teacher generally presents the learning objective that is finding the formula
of surface area of sphere
2. Apperception: Leads the students to recall the material that had been
learned before and correspond with the material that will be discussed such
as the area of circle.
3. Motivation: Motivates the students by relating the material that being
discussed with real life situation, for example: volume of earth

4. Main Activities (± 60 minutes)
(Phase 2: Present information)
4. Teacher reminds students about the volume of cone. Then, the teacher tells
to students that they are going to find the formula of volume of sphere
(Phase 3. Organize students into learning teams)
5. Teacher divides the class into 5 heterogenic groups.
6. Teacher gives a worksheet to each group and asks them to do the
worksheet.
7. Teacher tells the students that after doing the worksheet they have to
present their work in front of the class.
(Phase 4. Assist teamwork and study)
8. Teacher assists each group as they do their worksheet.
9. One of each groups presenting and explaining their group report and some
student in other groups give comment to it
10. The students and the teacher discuss about the right answer
11. The teacher asks to the students about the first problem solving
12. The students answer problems by their own ways
(Phase 5. Test on the materials.)
13. Teacher give a quiz to students to check students understanding
Closure (± 15 minutes)
(Phase 6: Provide recognition)
14. Teacher gives feedback and appreciates the result of every group.
15. Teacher gives a reward to the best group that has the best score.
16. Teacher give home work to the students.
H.Source
Contextual teaching and learning for 9th
grade, BSE
I.Assessment
Group Assessment : Participation, worksheet

5. ASESMENT RUBRIC
LEVEL CRITERIA NOTES
4
Super
Understanding the plan to determine the volume of
cone formula based on volume of cylinder more
Measuring cylinder and cone correctly at all
Writing and counting to determine the volume of
cone formula is correctly and liable to followed
Describe the steps to solve problem in right order
and correctly
Solid teamwork.
Writing the report of worksheet creative more
Good presenting the team product and answering all
questions well.
3
Good
Understanding the plan to determine the volume of
cone formula based on volume of cylinder
Measuring cylinder and cone most correctly
Writing and counting to determine the volume of
cone formula is effectively
Describe the steps to solve problem correctly
Good teamwork.
Writing the report of worksheet creative
Good presenting the team product and answering
most questions well.
2
Intermediate
Understanding some the plan to determine the
volume of cone formula based on volume of cylinder
Measuring cylinder and cone some correctly
Writing and counting to determine the volume of
cone formula is effectively enough
Describe some the steps to solve problem correctly
Ordinary teamwork.
Writing the report of worksheet creative enough
Presenting the team product and answer some
questions.

6. 1
Bad
Understanding little bit the plan to determine the
volume of cone formula based on volume of cylinder
Measuring cylinder and cone doesn’t correctly
Writing and counting to determine the volume of
cone formula is not gratifying
Doesn’t describe the steps to solve problem correctly
Bad teamwork.
Writing the report of worksheet doesn’t creative
Bad presenting the team product and doesn’t answer
most questions.

7. SCORING CARD
Num. Criteria 4 3 2 1 Notes
1
Understanding the plan to determine
the volume of cone formula based on
volume of cylinder
2 Measuring cylinder and cone
3
Writing and counting to determine the
volume of cone formula
4 Describe the steps to solve problem
5 Teamwork
6
Creativity writing the report of
worksheet
7 Presentation and answer questions
Range of values :
23 – 28 : A
17 – 22 : B
12 – 16 : C
7 – 11 : D