The effective carrier of preschool children's scientific education activities refers to various media and tools used to transmit scientific knowledge and inspire scientific thinking in educational practice. Common effective carriers are as follows:

1. Games: Set simulation scenes and experiments through games to help children understand some scientific concepts and knowledge.

2. Interactive experience: through interactive exhibitions and experiential activities, let children participate in it and feel and explore scientific phenomena personally.

3. Picture books and pictures: provide children with visual hints and inspirations of scientific knowledge and scientific thinking through the forms of story roles and illustrations.

4. Popular science toys and experimental equipment: Through some popular science toys, models, experimental equipment and other physical objects, let children carry out exploratory study and practice, and better understand and apply scientific knowledge. All the above carriers can play an important role in preschool children's scientific education activities, effectively guide children's scientific thinking and improve children's scientific literacy.