Post by itchelle08 on Nov 20, 2008 10:06:42 GMT -5
Date: 5th November, 2008
Subject: Science and Technology
Topic: Light
The refraction of Light
Grade: Four
No. of students: 21
Sex: 14 boys 7girls
Age: 9– 10 years
Ability: Below Average
Duration of lesson: 40 mins
Objectives:
At the end of the lesson, learners should be able to:
• Explain what refraction of light is
• Observe activities to show the refraction of light
.
Factors: D3, D8, D9, G3, I1
Strategy:
Inductive inquiry
Discovery
Instructional Materials:
Transparent cups, transparent oil, water, drinking straw, pencil, chart, and flashlight.
Introduction:
Teacher will close up the class and write a word on the chalkboard. Have a students say what is written on the chalkboard.
Students will not be able to see because the room is too dark. Elicit from students what is needed in order to see. Response should be light.
Development:
Step 1
The classroom is darkened. Teacher will turn on a flashlight and point the light to the chalkboard. Have students observe and desire what is happening. Response should be light is travelling in a straight light. Record and discuss students’ responses.
Step 2
Teacher will do a demonstration in front of the class where she will fill a transparent cup with water. Then place the pencil into the water. Allow students to view the resulting illusion and describe what they see. Students should realize that the pencil appears bent. Record the students’ responses on chalkboard
Step 3
Have students repeat the activity by pouring oil in a glass and have them observe and then describe their observations. Light also appears to be bending. Teacher will record students’ findings on the chalkboard. Explain to students that when ever light travels from one medium to another (such as air to water) it speed changes thus the bending of light is called refraction
Step 4
Students will now pour some water into the oil and replace the pencil into the solution. Have students observe and describe what they observed. Light is bending twice in this experiment. Responses are recorded on the chalkboard.
Closure
Lead students into a discussion about the experiments using a chart. Probe students to answer the following questions
How does light travel?
What is the bending of light called?
Competency task:
Draw an example of the refraction of light.
What is refraction of light?
Evaluation:
ITCHELLE BELBODA
Subject: Science and Technology
Topic: Light
The refraction of Light
Grade: Four
No. of students: 21
Sex: 14 boys 7girls
Age: 9– 10 years
Ability: Below Average
Duration of lesson: 40 mins
Objectives:
At the end of the lesson, learners should be able to:
• Explain what refraction of light is
• Observe activities to show the refraction of light
.
Factors: D3, D8, D9, G3, I1
Strategy:
Inductive inquiry
Discovery
Instructional Materials:
Transparent cups, transparent oil, water, drinking straw, pencil, chart, and flashlight.
Introduction:
Teacher will close up the class and write a word on the chalkboard. Have a students say what is written on the chalkboard.
Students will not be able to see because the room is too dark. Elicit from students what is needed in order to see. Response should be light.
Development:
Step 1
The classroom is darkened. Teacher will turn on a flashlight and point the light to the chalkboard. Have students observe and desire what is happening. Response should be light is travelling in a straight light. Record and discuss students’ responses.
Step 2
Teacher will do a demonstration in front of the class where she will fill a transparent cup with water. Then place the pencil into the water. Allow students to view the resulting illusion and describe what they see. Students should realize that the pencil appears bent. Record the students’ responses on chalkboard
Step 3
Have students repeat the activity by pouring oil in a glass and have them observe and then describe their observations. Light also appears to be bending. Teacher will record students’ findings on the chalkboard. Explain to students that when ever light travels from one medium to another (such as air to water) it speed changes thus the bending of light is called refraction
Step 4
Students will now pour some water into the oil and replace the pencil into the solution. Have students observe and describe what they observed. Light is bending twice in this experiment. Responses are recorded on the chalkboard.
Closure
Lead students into a discussion about the experiments using a chart. Probe students to answer the following questions
How does light travel?
What is the bending of light called?
Competency task:
Draw an example of the refraction of light.
What is refraction of light?
Evaluation:
ITCHELLE BELBODA