A course the "World of logic" puts the task to teach children to skills of basic cogitative operations : to compare, classify, give determinations, build deductions, distinguish to conformity to law, to reason т. of д.A manual is the detailed developments of employments, pluggings in itself recommendations on realization of employment on the whole and every his stage, exemplary charts of dialogues, analysis of possible difficulties on employment and description methods of their overcoming.Course the "World of logic" can be studied in 4 classes of general establishments within the framework of division of ФГОС НОО "Extracurricular activity at initial school". Can be taught as final part of authorial courses : the "World of riddles", "World of fantasy", "World of man" and as an independent course.2th edition.