What Your Preschooler Needs to Know: Read-Alouds to Get Ready for Kindergarten (Core Knowledge) (미국판)

Core Knowledge Series 2nd grade : What Your Second Grader Needs to Know (2014년 신판) (미국판)

Core Knowledge Series 페이퍼백 3종 세트 (K~G2) (미국판)

Core Knowledge Series 1st grade: What Your First Grader Needs to Know (2014년 신판) (미국판)

Core Knowledge Series K grade : What Your Kindergartner Needs to Know (2013년 신판) (미국판)