References
- Anthony , W.S. 1977 . Activity in the learning of Piagetian operational thinking . British Journal of Educational Psychology , 47 : 18 – 24 .
- Donaldson , M. 1978 . Children's Minds , Glasgow : Fontana .
- Gash , H. 1983 . Vico's theory of knowledge and some problems in genetic epistemology . Human Development , 26 : 1 – 10 .
- Piaget , J. 1970 . Science of Education and the Psychology of the Child , New York : Orion Press .