Describes an elementary school summer program designed to allow children to develop their fullest potentials for logical thinking and structuring their own knowledge. In particular, the activities of the science center are discussed. (JR)

Describes major theses of Piaget's work on development of intelligence. Implications of this work are significant in terms of methods, curriculum, and sequence of topics and activities used in science classrooms. Author cautions, however, that work of other child psychologists should not be completely forgotten because of Piaget's ideas. (PS)

A biographical sketch of Nikola Tesla, once regarded as a foremost electrician, is presented. His major works are described in the article. (PS)

Sixteen criteria are described for evaluating elementary school science curriculum materials. Each is briefly described. (PS)

Two teaching aids, on space flight and on natural selection and evolution of beaks in birds, are described. A simulated space instrument plaen was made and a space launch and other functions carried out. A simple experiment with match sticks was used to teach natural selection. (PS)

Describes two improvised models which can be used in classrooms to teach latitude concepts. Because of low costs involved, each student can be given the instruments involved in finding angles of elevations of different objects. (PS)