It is true that we cannot make a genius. We can only give to each child the chance to fulfill his potential possibilities. — Maria Montessori
Mathematics allows the child to internalise the concepts of number, symbol, sequence and operations.
The Montessori approach focuses on numeration and geometry. The 10 base system is consistent in all 3 years and encourages the child to order his work. Children start with linear counting and recognising numerals, and then move on to addition, subtraction and multiplication concepts. This is done in a fun, child-led way. Each child is different, and while some may be doing multiplication at the end of three years, others are still re-inforcing numerals and quantity.