Study investigated the relationship between children's (N=66) length conservation status and ability to acquire specific length measurement skills, and examined the interaction between mode of instruction (manipulative, graphic, and abstract) and conservation status. The expectation that length conservers would outperform nonconservers on…

Outlines a simple classroom demonstration that illustrates Piagetian conservation. Piagetian conservation refers to the illusion of an increase in mass by changing an object's form. This demonstration, done by forming an ellipse with an extension cord, shows that college students are as susceptible to this effect as are young children. (MJP)

Presents three dimensional models of biological pathways for the following cycles: carbon, nitrogen, sulfur, and a combination of the three. Discusses steps involved in each cycle and breaks each cycle into trophic and environmental regions. (MVL)

The concepts of distance, area, and the coordinate reference systems were investigated in relation to the displacement volume task among 300 randomly selected primary and high school children in Nigeria. Although results support Piaget's hypothesis, a developmental lag of about two years was observed in Nigerian students. (JN)

This research bulletin includes reports of research (on children) in progress or recently completed from March through August, 1971. Each entry includes information concerning the investigator, purpose, subjects, methods, duration, cooperating groups, and findings (if available). The reports are listed under several topical headings: (1) long-term…