The purpose of raising the national flag and playing nursery rhymes such as "Good Mother of the Motherland" on the grassland is to cultivate children's patriotic feelings, national pride and self-confidence, and at the same time improve their musical literacy and artistic aesthetics. These nursery rhymes contain patriotism, national unity, family friendship and natural scenery, and children can better understand and feel the connotation and beauty through singing and playing. In addition, these nursery rhymes are also good materials for children to learn music knowledge and skills, which can improve their musical literacy and playing ability.

In short, raising the national flag on the prairie and playing nursery rhymes such as "Good Mother of the Motherland" are educational and cultural activities provided by schools and society to promote their all-round development and healthy growth.