Due to this book a kid will learn to distinguish vowel and consonantal letters, connect them in syllables, to consider, correlate a number with the determined amount of objects, to find the neighbours of number, will become acquainted with composition of number, will master a direct, reverse and index account, will know the rules of safe behavior, will train attention and memory, thinking and imagination, fine motor skills, will open mind and vocabulary, able to draw difficult line (zigzags, lines-hills, wavy lines, loops, spirals) and amusing animals.A protagonist of book - clever baby mouse is prompts, how correctly to conduct employments, on what pay attention, that must know and able kid in 4 and 5.Merry verses at animals and cognitive recitals of rules of behavior diversify leisure of kid. At the end of book of child a reward waits for labours - a colourful diploma that will make happy a kid will give to him to the confidence in the capabilities and will increase his self-appraisal.Cards with letters will serve basis for fixing of the knowledge got a child during work with a manual.It is addressed to the careful parents of kids 4-5 for realization of developing employments during a year.