Life consists of different stages of development and growth. A toddler independently learns to move. They turn from their back on their front, then learn to sit, to crawl and eventually to walk and run. Each of these steps is important and requires time. None of these steps can be skipped, and this applies to all stages of life.
Maria Montessori describes these as the ‘sensitive periods’ of infancy:
“A sensitive period refers to a special sensibility which a creature aquires in its infantile state, while it is still in a process of evolution. It is a transient disposition and limitied to the aquisition of a particular trait. Once this trait or characteristic has been acquired, the special sensibility disappears.” (M. Montessori, "The secret of Childhood")
A child learns according to a predetermined plan. From time to time various “learning windows” open up and the child has to be given time to experience this period. Parents have to support the child in these phases by providing adequate learning offers:
“A child is naturally much weaker than an adult. If he is to develop his personality, it is necessary that the adult should hold himself in check and follow the lead given by the child. And he should regard it as a privilege that he is able to understand and follow him.”
Read more at the book "Unleash the Secret of Education and learn how to raise a happy child" by Hans-Peter Becker.