Students’ Learning Outcomes
· Identify major constellations visible at night in the sky.
· Identify bodies in space that emit and reflect light.
· Suggest safety methods to use when observing the sun.
Information for Teacher
· Constellations are the patterns of stars that aid in mapping the sky.
· Earth rotation causes the stars to appear to move.
· Earth revolution causes the constellations to appear during certain parts of the year.
· Some constellations have many stars while some have only a few.
· A circumpolar constellation appears to move in a circle around the pole.
· Circumpolar constellations in the northern hemisphere include the big & little dippers like Cassiopeia, CEPHEUS and Draco.
· Some bodies in space have their own light while some reflect light of the other stars. For example the sun has its own light and moon only reflect its light.
· Same safety methods to view the sun are to use the:
1) Blacked X-Ray film
2) Welder’s glass.
3) Pinhole camera.
Material / Resources
A chart of big bear like URSA major six pieces of chalks of black & blue color, 10 gummed stars, white crayon, blue or black computer sheet, pencil & pages
Worm up activity
· Paste the gummed star on the black paper.
· Ask the student to think about some imaginary objects which they could make with the help of stars like hen, duck, bear etc.
· Draw lines between the stars to make different patterns with white chalk.
· After doing this activity students will able to know more about different star patterns.
· Now tell the students that these patterns of stars are called the constellations.
Development
Activity 1
· Make the following table on the board.
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Sr. no.
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Bodies in space
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Emitting light
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Reflecting light
|
|
1
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Sun
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||
|
2
|
Moon
|
||
|
3
|
Earth
|
||
|
4
|
Comet
|
||
|
5
|
Asteroid
|
||
|
6
|
Meteor
|
· Ask the students to copy and fill the table.
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Sr. no.
|
Bodies in space
|
||
|
1
|
Sun
|
Emitting light
|
|
|
2
|
Moon
|
Reflecting light
|
|
|
3
|
Earth
|
Reflecting light
|
|
|
4
|
Comet
|
Emitting light
|
|
|
5
|
Asteroid
|
Reflecting light
|
|
|
6
|
Meteor
|
Emitting light
|
Activity 2
· Ask the student’s weather they have seen an X ray, surely more of the students will answer is yes.
· Ask one of the students to bring an old X ray sheet and a cello tape tomorrow.
· On the next day help the students in mapping a safety viewer to view the sun as:
v Cut two circles of about cm diameter from the sheet.
v Round a cardboard to make a cylinder of the same diameter with the help of cello tape.
v Paste both the X ray circular sheet placed one above the other at one end of the cardboard cylinder and fix it with the cello tape.
v Now view the sun through this safety viewer. You can observe the sun easily.
v Call some students one by one to view the sun through it.
v All the students will engage the activity.
v At the end tell the students that it is very dangerous to view the sun directly with naked eyes.
v Now tell them some other safety methods to view the sun safely.
Sum up / Conclusion
· There is large number of constellations in the sky.
Assessment
Q1. Name some two constellations?
(Expected response: Hercules, Leo, Liza, Gemini, Orion, cancer and Pegasus.
Q2. How many constellations is their overall?
(Expected response: There is a large number of constellations in the sky)
Q3. At which part of the day we able to see the stars/constellations?
(Expected response: at night)
Follow up
· Collect some constellations pattern from internet or from library and paste their images in your notebook.
