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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