In the "Mushroom Laboratory," children become researchers: they get acquainted with the world of mushrooms, learn how they "friend" trees, what dangers and benefits they have, examine samples under a magnifying glass, and observe mold grown on familiar food. The "Mushroom Laboratory" is a science-popular activity where the complex world of mycology is revealed through understandable observations and simple experiments. Here, children see that mushrooms are not just chanterelles in a basket, but also an invisible network that helps trees exchange resources and "talk" to each other. Starting with the basics: what a mushroom is as an organism, how mycelium differs from the fruiting body, and why caps can be so different. The kids get acquainted with the terms "mycelium," "hyphae," "spores," examine samples under a magnifying glass, and compare shapes, colors, and textures. The practical block shows how wonderfully mycology "works" in everyday life. Children will discuss yeast fermentation, why dough rises, how mold differs from noble mold in cheese, and what smells indicate that a product is better not to eat. The emphasis is on safety rules: do not try unknown mushrooms, do not smell mold cultures, do not collect finds in the park without adults and specialists. All entertainment in St. Petersburg is collected on our website.