LESSON PLAN 2

Learning Area Heat

Class 4 Science 1

Time 10.45 – 11.25 am (40 minutes)

Learning Objectives Understanding Heat Capacity

Learning Outcomes A student is able to:

i. Define specific heat capacity, c

ii. State that,

Vocabulary Heat, heat capacity, specific heat capacity

Prior Knowledge Student knows and understand the concept of heat, thermal

equilibrium and heat transfer

Scientific Skills Observing, comparing, defining and communicating.

Thinking Skills Evaluating, generating Ideas, relating and solving problems.

Scientific Attitudes

and Noble Values

· Having an interest and curiosity towards the environment.

· Realising that science is a means to understand nature.

· Appreciating the contribution of science and technology.

· Having critical and analytical thinking.

· Being objective and systematic.

· Thinking rationally.

· Being confident and independent.

Media and Tools Power Point, Text Book

1

Step/ time ContentTeaching and Learning

activitiesStrategy/Method/

Thinking Skills/Tools/

Moral Values

Step 1

Eliciting of Ideas

(3 minutes)

Learning Outcomes:At the end of the lesson student will be able to:i. Define specific heat

capacity, c

ii. State that,

Diagram 1:

23°C

1kg of water

Diagram 2:

A B 1kg of 4kg of water water

i. Greet and ask the last homework.

ii. Shows a picture 1. “There is a beaker with a mass 1 kg and initial temperature of 23°C” and asking student:- How can you increase 1°C of water in this beaker?

- By heat it.

iii. Shows picture 2. “There are two beakers which both has a same substance that is water. Beaker A and B each has 1kg and 4kg in mass. Both beaker have initial temperature 23°C” and asking student:- If I heat both beakers in 30 minutes, which beaker has a high rises in temperature?

- Beaker A

- Why do you think so?- Because beaker A has a less amount of water

iv. State the Learning Outcomes for today lesson.

Strategy:Student centered

Methods:Whole class questions and answer session

Tools/ Media:Computer, Power Point,

Thinking Skills:Comparing and contrasting

Scientific Skills:Communication

Noble values:-having an interest and curiosity toward the environment.- Realising that science is a means to understand nature.

Step 2Restructuring of Ideas(15 minutes)

First relationship:When mass is larger, so the rise in temperature is

i. Asking student according to diagram 2.- Which beaker has greater increasing in temperature?

Strategy:Teacher and student center

2

small,

Second relationship:Larger mass need larger amount of water to increases it temperature by 1°C,

Third relationship:Relate m, θ and Q,

Diagram 3:

1kg of Water

1kg of oil

Specific Heat Capacity is the amount that must be supplied to increase the temperature by 1°C for a mass of 1kg.

Specific heat capacity,

Which: C: heat capacity m: mass

Heat capacity is the amount of heat required to increase the temperature of the object by 1°C

- Beaker A

- Why?- Because beaker A has a less mass

- So, how do you relate increasing in temperature with mass?- Less mass has greater increasing in temperature.

- Which one do you think need a larger amount of heat to rise it temperature by 1°C?

-Beaker B

- Why?- Because it has a larger amount of mass so that it hard to increase it temperature.- Because it has a larger amount of mass so that it hard to increase it temperature.

- So, how do you relate amount the heat required to raise 1°C of water with mass?

- Larger mass needed larger amount of heat,

- Now, try to relate Q, m and ∆θ from two relationships that you have made before.

-

ii. Asking student according to diagram 3.

- Does heat required to increase 1°C of water same with oil?

Method:Questioning and explaining

Tools:Power Point, Computer, Text Book, White board

Thinking Skills:Relating, evaluate

Scientific Skills:Observing, comparing, defining and communicating.

Noble value:Having critical and analytical thinking.

3

Heat capacity depends on the:a) mass of the objectb) Type of material.

- No

- Why do you think so?- Because oil and water made from different substance.

iii. Say that “So do you say that heat required to increase 1°C of body depends on types of substance?”- yes

iv. Lets use complete this relationship that you have made.

- What is k?

- Define k is specific heat capacity. So,

- What is the unit of c?

-Shows the specific heat capacities of common substance.

Step 3Application of

Ideas

(7 minutes)

Solve problem involving heat capacity

i. Ask student to discuss three questions.-Discuss in group

Strategy: Student center

Method:Discussion

Tools: Power Point/ Computer/ white

4

board

Thinking Skills:Solving Problem

Closure

( 5 minutes)

Specific Heat Capacity is the amount that must be supplied to increase the temperature by 1°C for a mass of 1kg.

-

i. Ask student to define specific heat capacity by their own wordDefine specific heat capacity

ii. State the formula of specific heat capacity.Try to state the formula of c.

iii. Remind student to make revision in specific heat capacity and prepare for next lesson.

Strategy:Student center

Thinking Skill:Making conclusion

Scientific Skills:Communicating.

5

Application of Ideas

Solution:Given;m = 3 kg ∆θ = θf – θi = 36°C - 34°C = 2°C c = 840 J.kg-1°C-1

Solution

Given;Q = 124J m = 150g θi = 32°C

6

Answer is B

7