Brigitte Lutz-Westphal is a professor for Didactics of Mathematics at Freie Universität Berlin. In February 2018, she participated at a summer school at the Universidade de Brasília and held a workshop about "Flexible Thinking in Mathematics Education". The workshop introduced flexible thinking tasks that can be applied to all levels of education. The university interviewed professor Lutz Westphal and published an article about her research (in Portuguese).