It is kind of exciting to watch our children go through periods of growth.  Parents can usually detect it.  When growing, children's appetites can easily double or triple.  Without being told, they often take much more time for rest or sleep.  Physically, you'll soon notice your child's limbs have grown longer (making it obvious it's time to buy them new clothes—again), and their whole appearance begins to change.  What is even more thrilling is when you witness a real growth in their maturity too.