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.
Definition of Case Study. 1  A case study is a research methodology that has commonly used in social sciences. 2  A case study is a research strategy and an empirical inquiry that investigates a phenomenon within its real-life context.