Mathematics is the queen of all sciences. It was under this motto that the second day of the thematic week "Merry Mathematics" was held at the Tansholpan Nursery Garden. The events held within the framework of the day were aimed at intensifying the cognitive activity of children, at developing the creative abilities of children: watching the cartoon "About Kozlenka, who knew how to count up to 10" with theatricalization; the story-role-playing game "Visiting Grandma" was very interesting; presentation (joint work with parents) Books - babies with numbers; mathematical mosaic (games with mathematical content) in the process of which children answered questions with great excitement.