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Teaching through Practical & Laboratory work – Integration theory with Practical work Integration: bring together the part of Dilip Kumar Paul Faculty of TTTC B.Sc.Engg(EEE). M.Engg. PGCE(U.K.) M.Ed. The Management of Learning 1. 2. Methods of Delivery Resources to Supplement Strategies 1. Methods of Delivery: A teaching strategy is defined as “a combination of student activities supported by the use of appropriate resources to provide a particular learning experience (process) and or to bring about the desired learning (product)”. Notice, in the definition, the emphasis is placed firmly on the needs of the student not on the teacher. Some of the popular strategies are: Lecture Case Study Question & Answer Role Play Group Discussion Project Practical Assignment Tutorial Problem Solving Individual Learning Demonstration Seminar Practical: Real or simulated (pretend to have or feel) situations with student learning from experience. Demonstration: Teacher shows the basic steps and sequence of a skill, or the main attributes of a concept, with student watching. Discussion on a basic topic “Ohm’s Law” Theory: Current flowing through a circuit is directly proportional to the voltage applied across the circuit and inversely proportional to the resistance of the circuit in a certain temperature. Ammeter Voltmeter Resistance ▪ What is the Conception (an idea or mental picture of a group or class of objects formed by combining all their objects) of this theory ? ▪ Perception: (the ability of mind to refer sensory information to an external object as its cause) ▪ To take perception let us do a Laboratory or Practical or Experiment. Subject Name: Experiment No: Name of the Experiment: Ohm’s Law (or Verification of Ohm’s Law) Objectives: 1. Verification of Ohm’s Law 2. ` Knowing the connection of ammeter & voltmeter in the circuit Required equipment & Materials: 1. Ammeter (dc 0 – 1 amps) 1 no. 2. Voltmeter (dc 0 – 30 volts) 1 no. 3. Resistances (50, 200 ohms) 1 no each 4. Power supply unit (dc 0 – 30 volts) 1 no. 5. Wire as required Procedure: 1. Collect all the equipment & materials 2. According to the circuit diagram drawn below connect ammeter, voltmeter and resistance to the power supply unit. Ensure that ammeter connection with the load in series and voltmeter in parallel. Use right polarity in the connection of dc meters. Ammeter PSU Voltmeter Resistance 3. Connect 200 Ω resistance in the circuit and then supply the voltage. Take ammeter and voltmeter reading precisely and then record in the data table given below. 4. 5. 6. Increasing the supply voltage and then take 4/5 readings of ammeter and voltmeter. Repeat 3 & 4 points for 50 Ω resistance. Draw V – I curve taken data from the data table in the graph paper. Data Table Serial Voltmeter No. Reading 1 2 3 4 5 6 Ammeter reading in amps 50 Ω 200 Ω Worksheet 1. 2. Is there any changes of the current when changing voltage for 200 Ω resistance? Is there any changes of the current when changing resistance when keeping voltage constant? 3. Is Ohm’s Law verified by This experiment? Mention it. 4. If 1 amp current flows through 100 Ω resistance then (a) What is the supply voltage ? (b) For the same supply voltage what is the current for 50 Ω resistance? Worksheet: A worksheet is an incomplete handout which the student is expected to complete during or straight after the lesson. They can be used by individual students for individual attention. They allow students to work at their own pace, in an independent manner. There are several types of worksheet: 1. Job sheet: which contain instructions or specification so that a student can complete a piece of work. 2. Operation sheets: are used to explain a process or series of operations e.g. How to take blood pressure or how to operate a photocopier etc. 3. Assignment sheet: usually consisting of a number of questions, problems or tasks to be performed. 4. Experiment sheet: frequently used in laboratory work. • • • • • • • Teacher’s Responsibility Group size should be small preferably 2 (two). Ensure that all students can participate actively. Ensure health and safety. Assist each group. Guiding groups of students but not telling them every thing. Ensure student perception either by worksheet or by conclusion (written by student). Ensure feedback by returning back to the learner. Learner’s Responsibility • Working at own pace. • Learning from each other by pooling knowledge. • Learning and displaying group skills. • Working at the pace of the group. • Seek assistance from your teacher if needed. • Take care for delicate and dangerous experiment.