What genre is Raindrops in the first grade of primary school?

Raindrops fall on the grass and play slides on the grass; Raindrops fell on the umbrella and hit the drum on the umbrella; Raindrops fall on the petals and dance on them; Rain falls on the roof, falls on the roof (playing the piano); Rain drops in the river and blooms in the grass; Raindrops fell on the leaves and hit them.