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.
Received: November 2011 / Revised: February 2012 / Accepted: March 2012. Abstract. The purpose of this study is to explore primary school childrenâs understandings about the shape of. the Earth. The sample is consisted of 124 first-graders from five primary schools located in an urban. city of Turkey. The data of the study were collected through childrenâs drawings and semi-structured. interviews.