Libros de conservation of substance
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Conservation of weight and volume in secondary school students
Edward Desmond Hobbs
Sin valoración

The relationship between primary students' rationalization of conservation and their mathematical ability and achievement
W. George Cathcart
Sin valoración

Logical thinking in children; research based on Piaget's theory
Irving E. Sigel
Sin valoración

The acquisition of concepts of conservation
Guy R. Lefrançois
Sin valoración