DAILY LESSON PLAN

Subject : Chemistry KBSM

Class : Form 4 Cekal

Date / Time : 1.3.2010 / 9.00 am – 10.20 am (80 minutes)

No. of Students : 30/30

Theme : Interaction between chemicals

Topic : 6.0: Electrochemistry

Sub Topic : E: Voltaic Cell

E1: Daniell Cell

Previous knowledge : The students already know about electrolysis in industries such as metal extraction, metal coating and metal purification.

General Learning Outcomes : Analysing voltaic cell.

Specific Learning Outcomes : At the end of the lesson, students should be able to:

SLO 1. State verbally the energy change occurring inside a simple voltaic cell correctly.

SLO 2. Identify the negative terminal and the positive terminal based on the diagram

given.

SLO 3. Write the half equation and overall ionic equation for the reactions involving

various electrodes correctly.

SLO 4. Explain the reactions in a simple voltaic cell and Daniell cell verbally.

Scientific Process Skills (SPS) : 1. Observing

2. Measuring and Using Numbers

3. Predicting

4. Communicating

5. Interpreting Data

Manipulative Skills (MS) : 1. Using and handling science apparatus and substances correctly.

2. Clean and store science apparatus and laboratory substances correctly and safely.

Thinking Skills (TS) : 1. Relating

2. Visualizing

3. Generating ideas

4. Making conclusion

Scientific Attitude & Noble Values (SANV) : 1.Having critical and analytical thinking

2. Thinking rationally

3. Being cooperative

4. Being confident and independent

5. Thankful to God

Environmental Studies (ES) : Discussion on the importance of recycling and systematic disposal of used batteries.

Futures Study (FS) : Discussion on the ways of how the size of the car battery can be minimized so as to reduce the cost.

Teaching and Learning Aids (TLA) : 1. Laptop

2. LCD

3. Marker Pen

4. Manila card

5. Colour papers

6. Apparatus materials for experiment (Appendix 1)

7. Appendix 2 (Worksheet 1)

PHASE CONTENT TEACHING & LEARNING ACTIVITIES

REMARKS

Orientation(5 minutes)

Strategies Questioning

technique.

Video clip about various types of cells used in daily life.

1. Teacher shows a video clip on alarm clock animation.

2. Students are asked the following questions:(i) Can you name the three appliances that can woke up the actor in the video clip?

Ans: Radio, alarm clock and handphone (ii)Do you know what makes the radio, alarm clock and handphone work? Ans: Battery (iii)Are the batteries used in the alarm clock, hand phone and radio the same? Ans: Yes

3. Teacher introduces the topic.‘Daniell Cell’

SPS : Observing Communicating

TS : Visualizing Generating ideas.

SANV : Thinking rationally. Being confident

and independent.

TLA : Laptop LCD

Elicitation of ideas(10 minutes)

Strategy

Questioning technique on how energy changes in various types of cells / batteries.

1. Teacher asks students the following questions :

- Do you know the energy changes that occur in battery / voltaic cell used in the video clip?- Do you know the actual process which takes place in the battery / voltaic cell that generates electricity

SPS Predicting Communicating

TS Relating. Generating ideas.

SANV : Having critical and

analytical thinking Being confident

and independent.

Restructuring of ideas (40 minutes)

Strategies Power point

presentation- How to construct a simple voltaic cell.- Daniell Cell

Hands-on activity to study the generation of electricity from chemical reactions in a simple voltaic cell.

Discussion: Half equations and overall ionic equation.

1) Teacher explains the way to construct a simple voltaic cell.

2) Students are asked to be in three groups and teacher distributes Appendix 1 to every group.

3) Teacher reads out safety precautions (Appendix 1) and gives instructions on how carry out the activity.

4) Students carry out the activity to find out how electricity can be produced by the chemical reaction in a simple voltaic cell.

5) Students record their observations and readings

SPS Measuring and

Using Numbers Communicating Interpreting data

TS Relating Generating ideas Making

conclusions.

SANV Having critical and

analytical thinking Being cooperative. Being confident

in the worksheet given.6) A representative from each

group is asked to write down the result and observation on the table that is drawn on the whiteboard.

7) Teacher discusses the results with students and explains the reactions that occur inside a cell.

8) Teacher explains the half equations, overall ionic equations involved in the reactions and other example of voltaic cell. (Daniell cell)

9) Students are asked to submit their experiment report.

and independent.

TLA : Laptop LCD Marker pen Apparatus

materials for experiment. (Appendix 1)

Application of ideas (15 minutes)

Strategies Problem solving

(Worksheet 1) Answering structure questions about simple voltaic cell and Daniell cell.

Discussion on systematic disposal and recycling of used batteries.

1) Teacher distributes and explains worksheet 1.

2) Students are asked to complete all question in the worksheet given

3) Students are asked to identify the negative and positive terminals in examples of chemical cells and write the half equations and overall equation for the reactions involving various electrodes.

4) Teacher discusses the

SPS : Predicting Communicating

TS : Relating Generating ideas.

SANV : Having critical and

analytical thinking Thinking rationally.

ES

answers with the students.5) Teacher discusses the

importance of recycling and systematic disposal of used batteries.

TLA : Appendix 2

(worksheet 1)

Reflection (10 minutes)

Strategies Power point

presentation and questioning technique.(Appendix 3)

Discussion on size of car battery.

Social summary.

1) Students summarises the lesson with teacher guidance by using power point and questioning technique. (Manila card and colour papers will be pasted on the white board to show the construction of Daniell Cell)

2) Students are given a task to find out technology needed to reduce the size of car battery in order to minimize its cost. The finding will be discussing in class before start the next lesson.

3) Students are asked to complete exercise (quick review) in the chemistry text book page 107.

TS Generating ideas

SANV : Being confident

and independent.

FS

TLA : Laptop LCD Manila card Colour papers. Marker pen

SPS: Observing Communicating