lesson plan

INQUIRY TRAINING MODEL

Name of School :                             Standard : VIII Name of Teacher : Seema K Nair    Strength : Subject : Chemistry                         Date : Unit : Changes                                 Duration : Topic : Electroplating

Selection of Teaching Points

Concept: Electroplating

Objectives:

1. Pupils develop scientific process skills.

2. Asks data gathering verification and experimentation questions.

3. Analyse their own thinking process.

4. Establish relationships.

Materials required

Beaker, Iron Nail, Copper Rod, Battery, Copper Sulphate Solution.

SYNTAX

RESPONSE

Phase 1: Orientation to the inquiry procedure and Encounter with the problem A) Generating opening moves for the first phase of the model Today we are going to play a game called the inquiry process. I will present a puzzling situation and you will have to solve the puzzle, following the rules of the game. B) Orientation to the Inquiry Procedure. Here are the rules of the game. You are free to ask as many questions as possible to gather information about the puzzling situation. The only condition is that the question should be in the form of Yes or No form. When you have gathered enough data and have formed a guess, you should test your guess with experimentations which begins with ‘IF’ or ‘SUPPOSE’ and find the solution of the problem. C) Encounter with the problem- Discrepant Event Once in a county the queen wishes to wear a golden necklace and the Queen’s condition was that the necklace should be the most precious and the best one in the world. The King called his servant and asked him to announce this to the whole people and had offered prizes for the one who bring the most precious necklace. After two weeks one person came with a necklace which the queen liked very much. The King gave him 10000 gold coins. But after one month, the King called the person again to the Palace and sent him to the person. Why the King did so? PHASE 2: Data gathering Verification Teacher: Now you can ask questions. Student: Did he steal it from somebody? Teacher: No. Student: Did the queen loose the Necklace? Teacher: No Student: Whether it was made from some low quality materials? Teacher: Yes Student: Mam, that means it is not Gold? Teacher: Make it more clear Student: Its made up of some other materials, isn’t teacher? Teacher: Yes Student: But it looks like gold, isn’t it teacher? Teacher: Yes Student: Material looks like gold but it is not gold. Teacher: Yes Student: How is it possible teacher? Teacher: You Guess Student: Teacher, is it gold coated Teacher: Absolutely right Student: After one month, gold fade away. That is why the King sent him to the prison. Right Teacher? Teacher: Yes. Very Good PHASE III Data gathering experimentation Teacher: You can ask questions related to their experiment. Student: Teacher, battery’s positive terminal is connected to iron nail. Teacher: Yes Student: Some rod is connected to the positive terminal, right teacher. Teacher: Yes Student: This experimental set up shows low to coat a metal on another material doesn’t it teacher? Teacher: Yes Student: The material which is connected to the positive terminal gets coated on the material connected to the negative terminal. Teacher: Very good and then. Student: The metal which has to be coated is taken in the beaker as its solution. Teacher: Good. And why this battery is used? Student: Battery is used for producing electricity. Student: teacher, Copper is coaled on the iron nail right? Teacher: Yes. You are absolutely correct. Student: That means, the material which is connected to the positive terminal of the battery gets coated on the material which is connected to the negative terminal, isn’t teacher. Teacher: Right. Very Good PHASE IV Formulation of explanation Teacher: If you have listed your guess and arrived at some explanation, try to state in the form of statement. Student: When electricity is passed through the solution one metal gets coated on the other metals surface. Student: Is there any name to their procedure teacher? Teacher: Yes, this is known as electroplating. You can coat any metal on other metals surface by electroplating. PHASE V Analysis of thinking strategy Teacher: Now let us analyse the inquiry procedure. What kind of questions did you ask? Students: Questions related to the materials used for making Necklace. Teacher: Can you list some of the questions that lead you to the solution? Student: Whether it was made from some low quality material. Teacher: Whether the material connected to the positive terminal coated on the material connected to the negative terminal. Teacher: Then? Student: From the answers we understood that by passing electricity we can coat one metal on the surface of another metal. Teacher: Very Good. Thus you found the solution for the problem by asking questions, but of course divergent questions and analyzing the answers logically.

Teacher explains the inquiry procedure. Student ask data gathering experimentation questions Students form explanation by asking questions. Teacher probes clarity Students form generalisation

\