"The Annual Course of Child Development" is a series of books aimed at developing preschool children's abilities such as thinking, attention, speech, and memory. The "Annual Course of Thinking Development in Children Aged 5-6" includes tasks of varying complexity with comments for parents, so that children can not only acquire new knowledge but also have fun spending time with the whole family. The tasks in the book are selected in such a way as to develop creative thinking, combinatorial skills, and operations of analysis and synthesis, as well as to lay the foundations of logical and conceptual thinking. The main characters, boys Roma and Vanya, will accompany the children throughout the book and, through fun games, help reinforce the acquired knowledge. For adults working with preschool children.