To project child's development space it is necessary to hypothese what period of childhood historical development is taking place-critical or stable. The crisis of childhood is characterized by the child's loss of the participation in adult life and of its comprehension. Three categoria constructs are used in theoretical description of childhood history: ideal form, eventful-ness. intermediation. Childhood crisis is a loss of ideal form, a crisis of eventfulness in child-adult life and a crisis of intermediation in between child and adult. Modern childhood crisis concerns the childhood in which the culture mastering stages coincide with maturation stages. The projecting of child's development space in critical period demands the objectivation of childhood contradictions and the determination of intermediatory's position and not educative system's reforms.