Which book is it from? _?

It's going to rain, swallows fly very low, small fish swim to the surface, and small ants are in a hurry to move things. It's going to rain. People's Education Publishing House, volume one, grade one.

This article is an interesting popular science fairy tale. The full text ***9 natural paragraphs, mainly from the three phenomena of "swallows flying low, fish swimming on the water and ants moving", tells the characteristics of some small animals' activities before it rains and the reasons for these phenomena. ?

According to the content, the paper also has corresponding illustrations. Students can read stories by matching pictures and words, and know that they can understand the weather changes by observing some wonderful phenomena in nature. This is a fairy tale of knowledge, which is about meteorological common sense in life. Teachers can arrange for students to observe the weather and phenology before the rain before class, and make records. Advocate students to learn in life.

Extended data:

Swallows fly low, it's going to rain.

When it's going to rain, it's sultry, and some small flying insects fly very low in the sky, with small water droplets on their wings. Swallows fly very low in order to prey on these small flying insects. In addition, when it is about to rain, the airflow in the air is turbulent, and swallows always fly up and down. So, when people see swallows flying low, they know it's going to rain.