Nursery rhymes are an excellent tool to help preschoolers in several ways:

1. Language Development: Nursery rhymes provide children with the opportunity to learn new words, phrases and sentence structures. They help in developing their language and communication skills by exposing them to different words and sounds.

2. Cognitive Development: Nursery rhymes have repetitive patterns and rhythms that help in developing memory and cognitive skills in preschoolers. It also helps them understand cause and effect relationships.

3. Social Development: Nursery rhymes can be sung in groups, which encourages preschoolers to participate, share and interact with other children. This helps in developing their social skills and confidence.

4. Listening Skills: Listening to nursery rhymes requires children to focus and concentrate, which helps in developing their listening skills and attention span.

5. Emotional Development: Nursery rhymes often involve emotions and feelings, which help preschoolers learn about different emotions and how to express themselves.

6. Cultural Knowledge: Nursery rhymes often reflect the culture and traditions of a society. By learning nursery rhymes, preschoolers can gain cultural knowledge and understanding.

7. Fun and Enjoyment: Nursery rhymes are fun and enjoyable for preschoolers. Singing, dancing and playing with nursery rhymes can help them develop a positive attitude towards learning and education.