English to Portuguese Social Sciences Education / Pedagogy courses / programmes

It is a text about Zoltán Dienes.
" Logic and sets were used as an introduction and were followed with work using multi-based arithmetic blocks. These were intended to facilitate children's abstraction of mathematical concepts. Dienes also proposed the use of the "deep-end theory" in which he suggested that It was often better to start children at a more complex level rather than with the simpler examples"
any help appreciated