Children's masterclass combines play, reading, and first engineering observations. Participants will learn how simple mechanisms work, discover the secret of the movement of the Bogorodsk toy, and create their own craft. Simple mechanisms surround us everywhere, although children do not always notice how often they are used. A lever, an axis, movement up and down, tilt, connecting parts - all of this can turn an ordinary object into a small technical miracle. The masterclass for schoolchildren will help them see mechanics not in a textbook, but in action: through play, questions, and hands-on work. At the center of the meeting is an introduction to the structure of the Bogorodsk toy. These wooden figures come to life thanks to thoughtful movement: one part pulls another, a bar sets the rhythm, and a simple principle creates an expressive effect. During the lesson, children will be able to understand why the toy moves and how shape and mechanism are connected. Where to go in St. Petersburg today, look for on our website.