id	keyword
dialog-1782	early
dialog-1782	development
dialog-1782	mathematics
dialog-1782	childhood
dialog-1782	education
dialog-1782	children
dialog-1782	teachers
dialog-1782	knowledge
dialog-1782	students
dialog-1782	kmds
dialog-1782	course
dialog-1782	preschool
dialog-1782	research
dialog-1782	difference