Simple exercises for children to solve on their own: To promote careful observation, categorization, and logical thinking. The children must look closely, check, and categorize in order to solve the exercises. Their attentive participation will sustainably strengthen and develop their overall concentration ability as well as train logical thinking. Contents: Find the same building block! Assemble the blocks correctly! Which game piece is missing from the row? Match the game pieces with the points! Find the paper with the same pattern! Which ball is in the packaging? Match the balls correctly! Which stone is missing here? Find the matching playing cards! How many cards make up the card house?.