blastoderm: the germinal membrane from which the organs of the embryo are formed. Explanation of Terms Used in Entomology John. B. Smith He it was who introduced the terms Keimhaut (blastoderm) and Keimblatt (germ-layer).
Child Study. Child study, also called paidology or experimental pedagogy, was the attempt to apply the methods of modern science to the investigation of children in order to discover the laws of normal child development.
Child discipline. Child discipline is the methods used to prevent future behavioral problems in children. The word discipline is defined as imparting knowledge and skill, in other words, to teach. In its most general sense, discipline refers to systematic instruction given to a disciple.