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.
Young Children is the peer-reviewed journal of the National Association for the Education of Young Children (NAEYC). It is published five times per year and each issue offers practical, research-based articles on timely topics of interest.