By studying this section, students should be aware that every movement of the material world of all kinds, but not the movement of each object we can recognize, through observation, some naked eye can see, but more help is needed instrument (a telescope or microscope) to observe, and some through in

Through this section to learn, so that each student should be aware of the material world, but all kinds of movement and the movement is not each object can all recognize that there is a need to be adopted by naked eye observation, some can be seen directly, but many more need to be able to draw on

Through this study, should make each schoolmate to realize to the material world movement of all forms, but is not each object movement everybody all can realize, needs through the observation, some to be the naked eye may see directly, but more is needs to draw support from the instrument (telescop

Use this section to learn, should make every student aware of the physical world, sport manifestations, but not every movement of the object is to be realized, through observation, some are naked eyes can see directly, but more is needed with the help of instrument (telescope or microscope) observat

By studying this section, students should be aware that every movement of the material world of all kinds, but not the movement of each object we can recognize, through observation, some naked eye can see, but more help is needed instrument (a telescope or microscope) to observe, and some through in