Montessori is siutable for 0-6 yrs old pre-school kids...
In HK, there are only one or two 'real' montessori PG/kindy and others which speicified they are using montessori are somehow...
For home teaching, I think it is really good coz you can use those found at home to teach them...
although there are many 'toys' or 'materials' inside Montessori philosophy, and some have their own characteristics such as 'pink tower', 'cylinders'....if you realise and understand the theory inside, you can use other subsititudes for demostrating the theories at home too.
for the start, you can read the book 愛與自由 written by 孫瑞雪.