In order to determine the cognitive development of Navajo children in terms of Piagetian conservation of number, mass, and continuous quantity, 168 Navajo children at seven different age levels from 5 to adult were presented with a series of three conservation tasks. The tasks consisted of a standard object and an equivalent object that could be…

This study attempts to reinforce developmental theory concerning spatial Comprehension by building on the qualitative observations of art educators of the past, and by strengthening the empirical basis of contemporary investigations into the relationship between pictorial representations, intellectual maturity, and environmental stimulation.…

The papers and research reports in this monograph form two parts. Part I is intended to help geography educators learn more about how children conceptualize space. The validity of Piaget's views on the evolution of conceptions of territorial size among children of different countries was investigated. Reflecting a different concern for educators…