Editorial Note: Forbes Advisor may earn a commission on sales made from partner links on this page, but that doesn't affect our editors' opinions or evaluations. Learning a different language is tough ...

Most of us have little trouble working out how many millilitres are in 2.4 litres of water (it’s 2,400). But the same can’t be said when we’re asked how many minutes are in 2.4 hours (it’s 144).

While the Perrio Learning System provides a structured framework, it is essential to recognize that learning is a highly individual process. To maximize the system’s effectiveness, learners should ...