Lesson Plan Homeostasis 1.docx

LESSON PLAN Chiang Rai Municipality School 5 Biology Ms. Khao Mr. Yohanis Tuasuun 6 50 Homeostasis Homeostasis Process in Organism

School Subject Subject teacher Intern-teacher Grade Time allocation Standart 1 Topic Indicator Explain homeostasis process in Plant Explain homeostasis process in Paramecium Explain homeostasis process in Animal (Fish)

Objectives After this lesson, student will be able to: 1. Explain homeostasis process in Plant 2. Explain homeostasis process in Paramecium 3. Explain homeostasis process in Animal (Fish)

Learning Activities 1. Introduction (5 Minutes)

2. Core Activities (35 Minutes)

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3. Closing (5 Minutes)

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Greeting Brainstorming Motivation Teacher asked the student why plants can wither? Teacher will explain what is homeostasis Teacher will explain process of homeostasis in implicit explanation Teacher will let student giving a conclusion about today`s material Teacher will give some homework Teacher let student to lead the prayer Teacher end the lesson by giving a greet

Materials 1. Definition of Homeostasis Homeostasis comes from Greece, namely, homeo which means the same and stasis which means to maintain the situation. Homeostasis is a relatively constant state in the internal environment of the body. All processes that occur in living organisms to maintain the internal environment, under certain conditions to create optimal conditions for the life of the organism concerned. Homeostasis is a

mechanism for regulating a dynamic equilibrium environment in a constant body. We can simply say that Homeostasis is a process that takes place to maintain fluid balance in the body of living things. 2. The Process of Homeostasis in Some Oraganism a. Tumbuhan/Plant Transpiration, photosynthesis and respiration are commonly known plant metabolic processes. Transpiration can be interpreted as the process of losing water in the form of water vapor from plant tissue through the leaf mouth (stomata). The advantage of this process is to accelerate the rate of transport of nutrients through the root xylem vessels, to maintain the turgidity of plant cells so that their conditions remain optimal and as an effort to maintain leaf temperature stability (Lakitan, 2008).

b. Paramecium The function of contractile vacuole is to regulate the concentration of water in the cell. The contractile vacuole works the same as the name implies, in that it expands and contracts. The point of contractile vacuole is pumping water out of the cell through a process called osmoregulation, regulation of osmotic pressure. c. Animal (Fish)

Evaluation

Evaluation

1. Observe student’s knowledge 2. Observe student`s participation in classroom (student`s team work) 3. Check student`s team work and group presentation