Because we have a very serious problem regarding the learning of mathematics. For many students from poor backgrounds in Brazil bad inicial results in mathematics will severely limit their learning in subsequent years, condemning children to a future with restricted personal and professional opportunities.
Weak math teaching is one of the great obstacle to the advancement of Science and Technology in Brazil. According to the Brazilian Ministry of Education and Science, only 42% of 3rd grade students in elementary schools are proficient in the basic operations such as addition and subtraction. The 2013 Test ABC showed that 70,8% of 8-year-old children do not have sufficient knowledge of mathematics for their age. In the PISA ranking, it is in mathematics where Brazil is doing worst (57o place in the 2009 PISA).