Download LESSON PLAN LIQUID PRESSURE – Copy

Education Unit
: Junior High School 2 Kudus
Subjects
: Integrated Science
Class / Semester
: VIII / II
Theme
: Transportation and Respiration
Sub Topics
: Liquid Pressure
Time Allocation
: 1 x 25 minutes
A. Main Competence
Main Competence 1. Appreciate and live of their religion.
Main Competence 2. Respect and appreciate the honest behavior, discipline, responsibility, care
(tolerance, mutual assistance), mannered, confident, in interact effectively with the social and
natural environment within reach of the association and its existence.
Main Competence 3. Understand and apply knowledge (factual, conceptual and procedural) by
curiosity about science, technology, art, cultural phenomena and visible events.
Main Competence 4. Rework, present, and reason in the realm of the concrete (use, parse,
compose, modify, and make) and the realm of the abstract (write, read, count, draw, and
describe) in accordance with the learning in school and other sources in the same viewpoint
/theory.
B. Basic Competence and Competency Achievement Indicators
Basic Competence
Competency Achievement Indicators
1.1
Admire the order and complexity
of God's creation on the physical and
chemical aspects of life in the ecosystem,
and the role of humans in the environment
and make it happen in practice of their
religion.
1.1.1 Receive the physical characteristics of
the difference friends in class as creatures of
God.
1.1.2 Realize the importance plants in the
environment to provide the nutrients needed
by living things.
1.1.3 Respect and appreciate of their
religion.
2.1 Demonstrate behavioral science
(curiosity; objective; honest; accurate;
meticulous;
diligent;
careful;
be
responsible; open; critical; creative;
innovative and care environment) in their
daily
activities
as
a
form
of
implementation of the attitude in conduct
observations,
experimentation,
and
discussion.
2.2 Appreciate the work of individuals and
groups in their daily activities as a form of
implementation conduct experiments and
report experimental results.
2.3
Demonstrate
thoughtful
and
responsible behavior in their daily
activities as a form of implementation of
the attitude in choose healthful foods and
beverages and do not damage the body.
2.4 Show appreciation to others in their
daily
activities
as
a
form
of
implementation of the award to people
who sell healthy food without additives
dangerous mix.
3.8 Understand the pressure of the liquid
and its application in everyday life to
explain the blood pressure, respiration
diffusion at the event, and the osmotic
pressure.
4.8 Conduct an experiment to investigate
the fluid pressure at a certain depth, the
buoyant force, capillarity (investigate fluid
transport in the stem of the plant) and the
fluid pressure in the close room.
2.1.1 Conduct observations / experiments
honestly.
2.1.2 Report the results of observations
accurate.
2.1.3 Demonstrate behaviors honest,
meticulous,
diligent,
careful,
and
responsibility.
2.2.1 Demonstrate cooperation in group
work.
2.3.1 Demonstrate the behavior of discipline
and confidence in their daily activities.
3.8.7 Link the concept of pressure on liquid
(Pascal law) with flow and blood pressure.
4.8.2 Investigate the pressure of liquid in a
close room.
C. Learning Objectives
1. Students critically and meticulously to describe the pressure and liquid pressure through
literature.
2. Students logically and meticulously to explain the Pascal law and Archimedes law
correctly through group discussions and literature.
3. Students logically and meticulously to mention the application of Pascal law and
Archimedes law correctly through group discussion.
D. Learning Materials
Pressure is the force acting on a unit area of surface. You may have noticed that tire
pressure is usually measured in units of pound per square inch (psi). The SI unit for pressure
is called a Pascal (Pa). One pascal is equal to one newton of force acting on one square
meter of surface area. The liquid pressure is the force acting on a unit area of liquid surface.
In this liquid pressure is known two famous law, the law of Pascal and Archimedes law.
Pascal's Law reads: "When pressure is applied to one part liquid in a closed room, will be
forwarded by the liquid in all directions with equal". Application of the Pascal law widely
used in everyday life, especially in the automotive sector, include the hydraulic jack and
hydraulic disc brakes. Pascal law equation as follow:
P=F/A
Archimedes law reads: "If an object is dipped into liquid, the object will be a force called
the buoyant force of the heavy liquid removal". Due to the buoyant force, weight of objects
in liquids will be reduced. Objects raised in liquids will be lifted noticeably lighter than on
land. This heavy weight caused false and formulated as follows:
Wheavy = Wobject - Fa
with:
W heavy = weight of objects in liquids (Kg⋅m / s2)
W object = actual body weight (Kg⋅m / s2)
Fa = buoyant force (N)
and the magnitude of the buoyant force is formulated as follows:
Fa = ρ liquid x Vobject x g
with:
ρ liquid = density of the liquid (kg / m3)
V object = volume of the submerged object (m3)
g = acceleration due to gravity (m / s2)
Pascal law application is to determine the mass of the object, a submarine, a hydrometer,
etc. The mass of the object determines the size of the object's gravity. Meanwhile, the
density of the liquid determines the size of the Archimedes force (the buoyant force) of the
substance. If the gravity of an object larger than the Archimedes force, the object will sink.
However, if the Archimedes force is bigger, then the object will float, and the object will
drift if the same thing gravity by Archimedes force. In other words, it can be stated that:
1) The object will sink if ρ object > ρ liquid
2) The object will drift if ρ object = ρ liquid
3) The object will float if ρ object < ρ liquid
E. Approach / Strategy / Learning Methods
1. Approach
: Scientific Approach
2. Method
: Lecture and Discussion
3. Learning Model
: Group Investigation
F. Learning Resources
Hsu, Tom. 2005. Foundations of Physical Science Electronic Book, 2nd Edition. United
States of America: CPO Science.
Tim Abdi Guru. 2014. IPA TERPADU Jilid 2 untuk SMP/MTs Kelas VIII.
Jakarta:
Erlangga.
Zubaidah, Siti. 2014. Ilmu Pengetahuan Alam untuk SMP/MTs Kelas VIII Semester 2.
Jakarta: Pusat Kurikulum dan Perbukuan, Balitbang, Kemdikbud.
Worksheet
Book or relevant learning resources
Electronic media
G. Learning Media
 Power Point of Liquid Pressure
 Pictures about the application of Pascal law and Archimedes law
H. Learning Steps
ACTIVITY
OPENING
MAIN
ACTIVITY
DESCRIPTION OF ACTIVITY
Apperception and motivation
Say greetings
Lead students to pray
Check attendance of students
Teachers do apperception to ask questions that
are relevant material to be learned. "Have you
ever gone to the car wash? How can a car lifted
while being washed? Have you ever ride a boat?
Why the boat does not sink? "
Submission of competence
1. Teacher inform the material to be learn at this
meet.
2. Teacher explain to students the learning goals
3. Teacher inform the activities to be conducted
at this meet today there are two main activities,
namely to understand Pascal law and
Archimedes law, and its application.
Viewing
1. Students are guide activities plasticine press
with the thumb and little finger.
2. Teachers guide students to formulate the terms
of pressure and liquid pressure. The
formulation is based on the understand of the
activities that had previously been done.
Asking
Question the Pascal law and Archimedes law.
Experiment/explorer :
1. Set up three groups.
2. Conduct investigation into Pascal law and
Archimedes law.
Associate
Students associate concepts of Pascal law and
Archimedes law to the application.
Communication
Students discuss and continue activities of
understand the application of Pascal law and
TIME
ALLOCATION
5 minute
15 minute
Archimedes law through the pictures.
Evaluation
1. Students can make conclusions about Pascal
law and Archimedes law.
2. Teacher assigns students work on multiple
choice questions and make a list the
application of Pascal law and Archimedes law.
CLOSING
5 minute
I. Assesment
Basic
Competence
2.1
2.2
3.8.7
4.8.2
Indicators
Demonstrate scientific behavior
(curiosity;
objective;
honest;
accurate; meticulous; diligent;
careful; be responsible; open;
critical; creative; innovative and
care environment) in their daily
activities.
Appreciate the work of individuals
and groups in their daily activities
as a form of implementation
conduct experiments and report
experimental results.
Link the concept of pressure on
liquid (legal Pascal) with flow and
blood pressure.
Investigate the pressure of liquid in
a close room.
Assessment
Techniques
Observations attitude
Observations attitude
Write test and
performance
Write test and
performance
1. Methods and Shape of Instruments
Assessment
Methods
Shape
Affective
Attitude
Test psychomotor
performance (skills)
Write test
Observation sheet and rubric of attitude
Test and performance assessment
rubrics
Test description
Psychomotor
Cognitive
2. Authentic Assessment Instrument
A. Assessment Attitude
NUMBER
1.
2.
3.
4.
5.
ASPECTS OF THE
RATED
Curiosity
Accuracy and prudential
conduct experiments
Perseverance
and
responsibility in learning and
work both individually and
collectively
Communication skills when
learning
Discipline in work
3
SCORING
2
1
FACTS
Attitudes Assessment Rubric
NUMBER
ASPECTS OF
THE RATED
1.
Curiosity
2.
Accuracy and
prudential
conduct
experiments
3.
4.
Perseverance
and
responsibility in
learning and
work both
individually and
collectively
Communication
skills when
RUBRIC
1) Do not show enthusiasm in the observation
and difficult to engage actively in group
activities despite being encouraged to get
involved
2) Demonstrate curiosity, but not overly
enthusiastic and involved new active if asked
3) Indicates a great curiosity, enthusiastic, active
in group activities
1) View the experimental results according to
procedure
2) Demonstrate curiosity, but not overly
enthusiastic and involved new active if asked
3) Indicates a great curiosity, enthusiastic, active
in group activities
1) Do not strive sincerely to complete the task
and the task is not completed
2) Attempt to timely complete the task, but has
yet to show its best effort
3) Persevere in complete the task with the best
result that could be done, seeks timely
1) Active in the frequently asked questions, put
forward ideas, respect the opinion of other
learning
5.
Discipline in
work
students
2) Active in the question and answer, did not put
forward the idea, the opinions of other students
3) Active in the question and answer, did not put
forward the idea, do not respect other students
opinions
1) Collect timely and complete results
2) Collect the results on time and not completed
3) Collect the results are not timely and does not
finish
B. Assessment of Performance
NUMBER
1.
2.
3.
4.
5.
6.
7.
ASPECTS OF THE
RATED
SCORING
3
2
1
FACTS
Formulate the problem
Formulate a hypothesis
Plan your experiment
Prepare
tools
and
materials
Conduct observations /
measurements
Perform data analysis
Draw conclusions
Performance Assessment Rubric
NUMBER
ASPECTS OF THE
RATED
RUBRIC
3
2
1
formulated
problem with
the help of
teacher
not able to
formulate a
problem
1.
Formulate the
problem
the problem is
formulated
independently
2.
Formulate a
hypothesis
construct
hypotheses
independently
3.
Plan your experiment
plan
construct
hypotheses
with the help
of teacher
planned
not able to
formulate
hypotheses
not able to
experiments
independently
Prepare tools and
materials
tools and
materials
correctly and
neatly
5.
Conduct observations
/ measurements
scrutiny
observations
and free
interpretation
6.
Perform data analysis
performed
independently
7.
Draw conclusions
performed
independently
4.
experiments
with the help
of teacher
tools and
materials
tools right but
not neat
scrutiny
observations
but not
contains of
interpretation
carried out
with the help
of teacher
carried out
with the help
of teacher
plan
experiments
et of tool does
not strung
correctly
inaccurate
interpretation
of
observations
not able to do
not able to do
C. Instruments matter of Knowledge
Write test: multiple choice questions and make a list of the legal application of
Pascal law and Archimedes law (ATTACHED)
The answer key of multiple choice questions:
1. C
6. A
2. D
7. A
3. B
8. C
4. A
9. C
5. B
10. B
Multiple choice scoring guidelines:
𝐴𝑐ℎ𝑖𝑒𝑣𝑒 𝑠𝑐𝑜𝑟𝑒
𝑀𝑎𝑥𝑖𝑚𝑢𝑚 𝑠𝑐𝑜𝑟𝑒
x 100 = 100
Evaluation scoring guidelines:
Application Pascal law
: The name and image (15), work mechanism (25)
Application Archimedes law
: The name and image (15), work mechanism (25),
Conclusion (20)
J. Form of Communication with Parents / Guardians
Any form of communication with parents / guardians:
a. Description. Ask your parent / guardian read and sign the results of the task learners.
b. Provide information as soon as possible when their children have problems learning science
in the classroom.
Kudus, 11 May 2016
Headmaster JHS 2 Kudus,
Science Teacher,
Stephani Diah P, M.Hum
Haninta Melati, S.Pd
NIP. 19850514201022007
NIP. 199507142017121001