A kindergarten-level introduction to subway trains, covering their drivers, role in transportation, and such defining features as their sliding doors.
Part of the Seedlings series
Hello, fun! Our popular Seedlings series is written in a friendly voice, filled with dynamic photos, and features text crafted for the youngest of readers. Each title closes with a labeled-image guide for further review. As introductions to informational text, these titles will plant the seeds of knowledge!
