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.
Target Child. Target child observations were invented to help study concentration in children and give an idea of an individual childâs holistic development, these observations can help to show a childâs development at particular stages as the individual child is observed over a set period of time.