1. In the initial stage of pinyin learning, with the help of the sand pinyin board, children can have a preliminary understanding of pinyin letters through the teacher's guidance on pronunciation and touching the sand pinyin board.

2. Cultivate children's sense of order, concentration, independence and accuracy.

3. Exercise improves children's literacy and memory.

4. Let children present the writing of the letters of the sand script again by rubbing, so that children can deepen their understanding of the letters of the sand script and establish a certain writing foundation.

The purpose of Montessori teaching AIDS is as follows:

1. Cultivate children to master basic life skills and develop good living habits.

2. Guide children to learn basic social etiquette.

3. Cultivate children's independence, autonomy, concentration and self-confidence.

4. Develop children's hand-eye coordination, muscle flexibility and body balance.

5. Cultivate children's self-control ability and "internal discipline".

6. Cultivate children's sense of cooperation in social communication and promote children's social development.

7. Cultivate children's ability to adapt to the environment and society.

8. Learn the language and exercise children's writing ability.

9. Cultivate children's aesthetic taste and artistic accomplishment.

10, cultivate children's innovative ability.