SCIENCE 3

SCIENCE 3

Unit IV, Chapter 2, Lesson 4: Winds Temperature, Wind Speed and Wind Direction

4

STRUCTURED LEARNING EPISODE

GRADE III

Competency:

Describe the changes in weather over a period of time (S3ES-IVe-f-3)

Lesson:

Winds Temperature, Wind Speed and Wind Direction

Objectives:

1. Tell how cold or hot the air is

2. Compare the temperature of air in different places

3. Describe the speed and direction of the wind

4. Participate in group activity

Reference:

Growing with Science and Health 3, pp.212-213

K to 12 Learners Material pp. 159-161

K to 12 Teachers Guide pp. 173-176

Materials:

Pictures/Illustration

Thermometers, improvised wind vane, weather chart timer, electric fan

Activities:

Priming

Activity by Station

Prepare the illustrations ahead of time (see the illustration below). Make them large enough for the pupils to be able to see even at distance.

Divide the class into four groups. They will do the activity by station. Ask them to move from one station to another after 3 minutes. This should give them time to answer the questions in the activity cards. The pupils can write their answers in their notebooks.

STATION 2

STATION 1

STATION 3

STATION 4

Activity

Activity Sheet 4A: Measuring Temperature

Activity Sheet 4B: Wind Temperature and Direction

Analysis

(must be guided by the observations noted by the pupils)

Activity 4A: Measuring Temperature

1. What re the temperature readings inside the classroom and outside the classroom?

2. Are there temperature changes? If so, what do the changes in the temperature mean?

3. How does air temperature affect the weather?

4. What happens when the speed of the wind is fast? Is slow?

5. How do you know if the wind is moving fast?

6. What else can you look at to describe the speed and direction of the wind?

Activity 4B: Wind Temperature and Direction

1. How does it feel when it is windy?

2. How does it feel when there is no wind?

3. What is the temperature when there is a wind? when there is none?

4. What does people do when there is no wind?

5. How do we describe the direction of the wind?

Abstraction

What is wind? How do we measure the speed of wind? How do we describe the direction of the wind? How does wind temperature affect the weather condition?

1. Wind speed is measured by an anemometer. The wind speed is shown by the number of circles or revolutions the anemometer makes in one minute.

2. Temperature is the degree of hotness or coldness of air. A place gets hot when it is heated by the sun. It gets cool when the place is not directly heated by the sun. The coldest time of a 24 hour day is just before sunrise, this is because the earth has been losing heat all night.

3. The movement of wind also affects the air temperature. When the wind blows, it blows out warm air. Cooler air comes in and air temperature will also be lower.

4. An area gets hotter when it is heated by the sun and gets cooler when the heat leaves it. The coldest time of a day is just before sunrise, after the earth has been losing heat all night.

5. Air temperature affects the weather conditions. During warm weather, the temperature rises. We say the temperature is high. During cooler days, the temperature sinks or drops. We say the temperature is low. The average air temperature is 19-32 0C. A temperature reading below 19 0C means it is cold. A temperature reading above 32 0C means it is warm. Air temperature changes from time to time and from place to place.

Application

In what room would you like to stay, in a room where wind blows fast or in a room where theres no wind at all? Why?

Closure

How does wind affects the weather condition?

Changes in the speed of the wind cause change in weather condition.

Assessment

Fill each blank to complete the sentence.

1. Moving air is called ________.

2. The speed of the ________ affects the weather.

3. When the wind moves fast the temperature is _________.

4. We can look at the _______ if we want to describe the speed of the wind.

5. We make the wind around our body move fast by using ________.

Agreement

Describe how wind speed affects weather conditions. Write your answer in your notebook.

SUPPLEMENTARY WORKSHEET

GRADE III

Competency:

Describe the changes in weather over a period of time (S3ES-IVe-f-3)

Lesson:

Winds Temperature, Wind Speed and Wind Direction

Objectives:

1. Tell how cold or hot the air is

2. Compare the temperature of air in different places

3. Describe the speed and direction of the wind

4. Participate in group activity

Reference:

K to 12 Learners Material pp. 159-161

Materials:

2 thermometers and crochet thread or thin rope

Direction:

Activity Sheet 4A: Temperature of Air in a Room

1. Take two thermometers.

2. Tie one thermometer (A) tightly to a strong support inside the room. You can tie it to a nail on the wall or a window grill. Just make sure that you hang the thermometer in a place where you can easily read the temperature.

Thermometer B

Thermometer A

1. Tie the other thermometer (B) to a shady area outside the room. You can tie it to a branch of a tree that is not directly under the suns heat.

2. Two students will read thermometer A, Another two students will read thermometer B. That will be the initial temperature of air inside and outside the room.

3. Continue taking the temperature readings every 10 minutes until you reach 60 minutes.

Complete Table 1 below with your result in your notebook.

4. Answer the following questions:

a. Inside the room: What is the highest temperature recorded? Lowest temperature recorded?

b. Outside the room: What is the highest temperature recorded? Lowest temperature recorded?

c. Are there changes in the temperature readings inside the room? How about outside the room?

d. Where were the temperature changes greater, inside or outside the room?

e. What do these changes in the temperature mean?

f. In which area was the air cooler, inside the room or outside the room?

SUPPLEMENTARY WORKSHEET

GRADE III

Competency:

Describe the changes in weather over a period of time (S3ES-IVe-f-3)

Lesson:

Winds Temperature, Wind Speed and Wind Direction

Objectives:

1. Tell how cold or hot the air is

2. Compare the temperature of air in different places

3. Describe the speed and direction of the wind

4. Participate in group activity

Reference:

Growing with Science and Health 3, pp.212-213

Materials:

electric fan, thermometer, improvised wind vane

Direction:

Activity Sheet 4B: Wind Temperature and Direction

1. Sit near to the fan.

2. Observe how the air feels.

3. Let your classmate switch the fan to slow.

4. Observe how the air feels. Get the temperature (use thermometer) and direction of the wind (use improvised wind vane).

5. Let your classmate switch the fan to medium speed, fastest and stop. Describe how you feel. Get the temperature and direction of the wind each time.

6. Answer the following questions:

a. How does it feel when it is windy?

b. How does it feel when there is no wind?

Prepared by:

KATHERINE L. ROMERO

Teacher I