Observe an object

1, the range of observation objects is different at different positions.

2. The shapes of objects observed in different positions are different.

Key points of knowledge

Holiday gifts (different locations have different observation ranges)

1. With the change of observation position, it can be judged that the picture of the observed object has changed accordingly.

2. According to the observed pictures, judge the position of the observer.

Tiananmen Square (observing objects of different shapes in different positions)

1. By observing and comparing some photos, we can identify and judge the corresponding relationship between the shooting location and the photos.

2. By observing a group of photos taken continuously, we can judge the sequence of photos taken.