by Hélder Pinto, Cristina Silva · Federação Portuguesa de Futebol · tapa blanda · ISBN 9789898886149
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«Contas de cabeça» is a book of mathematical puzzles by Hélder Pinto and Cristina Silva, published by the Federação Portuguesa de Futebol in paperback.
The book brings together fifty mathematical puzzles inspired by football, with dozens of images and examples from the sport, including the Portuguese national team. The challenges aim to capture students' interest in mathematics through problems different from the usual school ones, but linked to the curriculum.
The subtitle of the work is «50 desafios matemáticos de futebol»; it is written in Portuguese, has 112 pages and was published on 23 March 2018.
Aimed at students, teachers and football fans, it offers a playful approach to mathematics.
