Welcome to Science E-learning. Lessons here are specially made for Elementary Science Grade Three.

Tuesday, May 02, 2006

Refraction of Light







A. Subject Name: Science

B. Lesson Reference Number: Grade 3

C. Lesson Title:
Refraction of Light

D. Lesson Description:
The lesson covers the process of light refraction.

E. Learning Outcomes:
At the end of the lesson, the students should be able to explain how refraction of light occurs. They are also expected to cite different evidences of light refraction in our everyday life.

F. Learning Presentation:
Hi, kids! Today we are going to talk about refraction. Never heard of the word 'refraction' yet? Would you believe this process is evident in our day to day activities? Well then, click on the link below to learn more about refraction.
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr2.html#c1

Look at the picture above. What do you see when you place a spoon in a glass of water? The spoon appears to bend where it enters the water. The pencil is not really bent. The light we see has bent as it moves from water to air. This is called
refraction.

Another illustration below shows the bending of light as it passes through two transparent materials: first through air, then through glass.











Study this picture. What happened to the image of the girl when viewed through the drinking glass? This is another example of refraction or bending of light.















Explore another link below about bending of light.
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr.html


G. Learning Activity:
Here are two activities for you to do. Answer all the questions after each activity.
http://www.ocean-institute.org/edu_programs/materials/P/PDF/PDF_FG/LSON_A3.pdf

H. Learning Evaluation:

Now, let us see how much you have learned. Click the link below to take a quiz.
http://www.prongo.com/quizstation/

I. Assignment:

Study the following link to know more about refraction and about our next topic of reflection.

http://camillasenior.homestead.com/optics3.html






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