A workbook for older preschool children, by doing which they will learn to compare items by size, get acquainted with measures of length, weight, volume, learn to use a conventional measure and measure using a ruler. Be sure to consolidate the knowledge gained in the notebook in everyday life. If the child finds it difficult to complete the task, help him, but do not complete the task for him. Study the book for 20-25 minutes a day, avoiding overwork of the child.