It looks like the surface falls off sharply
at the boundary between the two parts
This task involves a clear plexiglass surface on
which infants can crawl
just below the surface
Who have been crawling for 6 to 8 weeks often refuse to cross
운동 기술과 인지사이
two---- one side & the other side
at the boundary between the two parts
This task involves a clear plexiglass surface on
which infants can crawl
just below the surface
Who have been crawling for 6 to 8 weeks often refuse to cross
운동 기술과 인지사이
two---- one side & the other side