18 months - 2.5 year
2.5 year - 3.5 year
3.5 year - 4.5 year
4.5 year - 5.5 year
The most important period of life is not the age of university studies, but the first one, the period from birth to the age of six.
Do not tell them how to do it show them how to do it. if your tell them, they will watch your lips move. if you show them, they will want to do it themselves.
it is a child centric where child thinks himself collaborate and communicate with peers thus developing 4c's.