Development of the Logical Operations in Preschool Children

The experimental research is focused on logical thinking development mechanisms and determinants finding out. Possibility and efficiency of conservation principle formation at preschool children through formation of knowledge about classification and seriation logic operations structures is verified. New methods of classification and seriation training were developed. Knowledge formation about compositions and structures of classification and seriation logical operations made preschool children able to shift from pre-operational to concrete operational logical thinking stages. This is the way knowledge about logical operations structures is one of the logical thinking development determinant.