Day and moon topics
4. Daily and monthly meals
I. The scientific concept of teaching objectives
1. Daily and monthly eclipses are astronomical phenomena resulting from the movement of three celestial bodies: the sun, the earth and the moon
2. The moon runs between the sun and the earth, and when the earth is in the shadow of the moon, the moon's eclipse is the shadow of the moon that runs into the earth, and the earth is blocking the process and method by which the sun shoots into the moon
1. Study of the causes of the eclipse and the moon using simulation methods
2. Detailed observation of phenomena in simulation experiments
3. Logical reasoning based on the phenomena of simulations and speculation about the emotional attitudes and values of the eclipse and the eclipse watch
1. Experience the rigour, objectivity and pleasure of scientific experiments and recognize the importance of designing scientific research programmes
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3. Conscious of the difference between simulation experiments and speculation and objective truth
4. Conscious that astronomical phenomena can be recognized
Ii. Selected and difficult steps the eclipse and the moon are astronomical phenomena of the sun, earth and moon. Logical reasoning based on the phenomena in the simulation experiments, and predicting the causes of the eclipse and the eclipse
Iii. Presentations, photos, glasss, hands, observations, observations
I. Understanding the process and characteristics of the occurrence of the eclipse
1. Discreet students, we have learned about the changes in the moon, knowing that the changes in the moon have taken place within a month, but can sometimes see the entire process of the changes in the moon at night. Have you seen them? What kind of phenomenon is this? Is there a loop in the sun? What's this about? Have you heard of the eclipse and the moon? What's your problem with the eclipse and the moon? We're here to study the sun and the moon
We're going to study the course and characteristics of the eclipse
3. What are the characteristics of how the eclipse occurs? What do you think of these characteristics
4. Panel reporting on the outcome of the discussion, teachers collated and updated in due course some other factual information about the occurrence of the eclipse
5. Characteristics of the occurrence of solar eclipses
(1) the sun is blocked by an object
(2) the object that is shielded by light is circular or spherical
(3) the object is motion-ridden
(4) the object that is shielded by light looks about the size of the sun
(4) earth, luminous objects and the sun are almost on a straight line
6. How do you think it may have been formed, given the characteristics of the eclipse? (analytical process presets
(1) part of the outer edge of the sun is an arc, indicating that the object that is shielded is round
(2) in the course of the eclipse, sometimes the entire surface of the sun is blocked and turned black, which means that the objects that block the light are the size of the sun from earth
(3) the part of the sun that is covered from the west towards the east suggests that the object is moving from the west to the east, combining the above analysis and possibly the moon blocking the light of the sun)
Ii. Simulation of solar-eating causes
One, how do you use simulation experiments to confirm our theory that the moon is blocking the light that sets the sun on earth
2. Sub-groups design plans for simulation experiments, with attention to design
(1) what experimental material is used to make such a simulation
(2) how to experiment
(3) what is expected in the experiment
(4) what phenomena are observed that indicate that the eclipse occurred
3. The student subgroups conduct simulation experiments throughout their lifetime with a flashlight representing the sun, with a ping-pong ball representing the earth, with a glass ball throughout their lifetime when the moon moves from west to east, and with a glass ball around the ping-pong ball for one week, to see under what circumstances the sun is not seen (simulation exercises to draw attention to the light objects that are smaller than the object that is blinded, the object that is motionable, the object that is blinding is not necessarily a daily meal between the light of the torch and the ping-pong ball, the three on a straight line and when the distance between the three persons is appropriate, ensuring that the glass ball's shadow falls on the ping-pong)
Communication
(1) how is simulation done
(2) what are the phenomena that indicate the occurrence of a solar eclipse
(3) what is the position of the sun, the moon and the earth at this time
(4) under what circumstances does the eclipse not occur
Iii. Causes of the eclipse
1. Speak in your own language about the causes of the eclipse (when the moon moves to the middle of the sun and the earth, if the three are on a straight line, the moon will block the light of the sun when it comes to the earth, where people in the shadows can only see part or all of the sun, and then the eclipse occurs)
2. Presentation of a map of the causes of the daily diet and the causes of the reading of 54 pages of textbooks
3. Teachers draw sketches on blackboards to educate students about the causes of the eclipse
What else did you find out
One, when the eclipse occurs, not everyone on earth can see it at the same time. Only people in the moon shadow can see it
2. Based on its own analysis of the causes of daily eating, it is assumed that the eclipse always occurs at the beginning of the agricultural calendar
How does a transition like that happen? The legend of the moon-eating dog one day in india, some tribes think it's a dragon that devours the moon, and fortunately one hero cut off its head, so the moon quickly resurfaces
Iv. Causes of the monthly diet
1. The interview asks the students to speculate about the location of the three celestial bodies when the eclipse occurs
Students think about speculation (when the sun, the moon and the earth are on a straight line, the earth will block the light of the moon when people on earth will observe the eclipse)
3 proof by simulation
Can you draw a picture of what happened? (students try to draw a schematic of the causes of the eclipse)
5. The cause of the eclipse according to the graph
6. When does the monthly diet take place in the agricultural calendar? (the monthly diet always takes place in the agricultural calendar 15)
Summary outreach
What have you learned from this course? What do you know about simulations
2. Think about why there is an eclipse instead of a moon? When the eclipse took place, the moon went into the shadow of the earth, and because the earth's projection in orbit was always larger than the moon, the eclipse would not have happened
4. The moon lives between the earth and the sun, the sun and the sun, the sun and the sun
This assignment: students are particularly satisfied with the evaluation of the course o and the signature of the students in general
Vi. Teachers ' assessment
2. Student evaluation of the course:
One, the student's last job evaluation was better
Vii. Pedagogy。
