Ашық сабақ. Electrical Resistance. 8-сынып.

1 слайд
I. Organization moment: Greeting. Divide into groups. “ Electrons”, “Conductors”, “Insulators” Question: What do you know about your group name?

2 слайд
II. Check home task Game “Domino” repeat the last lesson. Electric current- электр тогы Source of electricity- ток көзі Conductor – өткізгіш Insulater- изолятор Charge- заряд Time- уақыт Battery- батарейка Formula- формула Material- материал Capacity - конденсатор Objects- нысан Elements- элемент Voltage- кернеу Electric circuit- электр тізбегі Switch-кілт Bulb- шам Cell- батарейка Voltmeter- вольтметр Conducting wire- өткізгіш сымдар Ammeter- амперметр Measurement- өлшеу Potential difference- потенциалдар айырымы Electric energy- электр энергиясы Circuit diagram- тізбектің сұлбасы Current- ток күші Volt- Вольт Ampere- Ампер

3 слайд
III. Guess the Topic. “ Brain storm”

4 слайд
Electrical resistance. Learning Objectives: • Apply Ohm’s law for part of electric circuit for problem solving. Lesson Objectives: By the end of the lesson, the learner will be able to: ALL learners will be able to recall the definitions of electrical resistance. MOST learners will be able explain physical meaning of electrical resistance. SOME learners will be able to apply Ohm’s law for part of electric circuit for problem solving.

5 слайд
Kazakh Russian English Кедергі жасау сопротивляться To resist Кедергі сопротивление Resistance Құрал-жабдық инструмент Tool Ом Ом Ohm Ом заңы Закон Ома Ohm’s law Цилиндр цилиндр Cylinder Электрлі қондырғы Электрическое устройство Electronic device Мөлшері количество Amount Мәні значение Value IV. Terminolgy. “Rythm”metod

6 слайд
V. Introduction new topic : “Jigsaw” metod Discriptor • Read task • Retell • Answer for question

7 слайд
V. Introduction new topic : “Jigsaw” metod Discriptor • Read task • Retell • Answer for question 1.The relation between electric current, voltage, and resistance is called Ohm’s Law: I=U/R (current=voltage/resistant) Question: Why we use resistors? II.Colour codes of resistors. Every electronic devicehasresistors inside. We use resistors to control the amount of current passing through elements. These resistors can be very small in length (3-4mm). The task: Draw a picture of the following resistance by using colour code. 150000Ω, 10Ω, 76300Ω III. A tool for measuring voltage in an electric circuit is called a voltmeter. An ohmmeter is used for measuring resistance. A multimeter can measure several parameters. For example,voltage, current, resistance and temperature. Question: Where we use resistors?

8 слайд
IV.Solving problem. 1.Electric kettle uses 220 Volts and 10 Amperes. How many Ohms is the resistance of the kettle? 2.Current of more than 0.01 Amperes is dangerous for people. Resistance of human body is about 2000 Ohms. How many Amperes do 220 Volts produce?Is this current dengerous? 3.Electric eel can produce about 800 Volts. Wet human body is about 500 Ohms. How many Amperes do pass through the body if an electric eel attacks?

9 слайд
V. “Mind Map”metod. Assemble the electrical circuit.

10 слайд
VI.Term idefication. Kazakh Russian English Кедергі жасау Ом Tool Кедергі Электрическое устройство Amount Құрал-жабдық Закон Ома To resist Ом Количество Value Ом заңы Инструмент Ohm’s law Цилиндр Сопротивляться Electronic device Электрлі қондырғы Цилиндр Ohm Мөлшері Сопро тивление Resistance Мәні значение Cylinder

11 слайд
VII. Home task: Learn the definitions VIII.Reflection: “INSERT” W I knowБілемін + New for me Жаңалық - I don’t know Білмеймін ? I want to know Білгім келедіФ