Lesson Plan in Science Four
I -Tell
the position of the earth, the sun and the moon in space.
II -Earth,
Moon and Sun in Space
III -Have you seen
the sun, the moon and the earth? When do you usually see it?
How big do you think the sun is? Is it as big as the
earth and the moon?
Who can give us a good
guess for each. I need him / her to come to the board to illustrate the
difference.
Before we will start, let us first give meanings to the
following words.
1.
Orbit
2.
Axis
3.
Sun
4.
Earth
5.
Moon
6.
Rotation
7.
Revolution
Okay let us try
to investigate. The Sun is the center of our solar system. It is a ball of fire
that illuminates each and every planet and heavenly body in our system. As we
have learned previously that the solar system is composed of 9 planets. Each
planet has its own moon. Some have many moons and some has only one. Earth has
only one moon. How does the earth move?
Do you have any idea? How about the moon? The sun?
The sun does not
move. It stays in one place. The earth is going around the sun while the moon goes
around the earth. Just like this illustration.
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The earth moves
around the sun as the moon moves around the earth.
When a part of
the earth faces the sun, it is daytime on that period. The other part of the
earth that doesn’t face the sun is night time. The moon doesn’t have its own
light. It only shines at night thru thye light of the sun. The part of the moon
that faces the sun is the one that is being reflected on us.
The earth spins
like a ball in its orbit in 24 hours. It is called rotation. That is why we
experience the night and day. As it
rotates, it moves around the sun in a span of 365 days. This is called revolution.
The moon rotates
and revolves around the earth in 29 days. That is why we have the calendar
days.
IV -Why
do we have night and day?
Where did we get the word calendar from?
In what motion does the earth rotate on its axis?
V -I
will group you into 3. Please bring a big ball and a small ball. Also bring a
flashlight.
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