Teaching Mathematics and Algorithmics with Recreational Problems: The Liber Abaci of Fibonacci

International audienceI propose an empirical study on theintroduction of an historical perspective onmathematics education at different levels in the French secondary school curriculum (11-18 years old). First of all, I present, in the historical contexts of the twelfth and thirteenth centuries, elements of the biography of Leonardo da Pisa, better known as Fibonacci, and of his mathematical work. I pay close attention to the mathematics of the Islamic countries that had largely fed his thinking. I dedicate an important part of our contribution to excerpts from theLiber Abaci to understandbetterhow his work might contribute to today's classroom. All selected extracts belong to the category of so-called 'recreational' problems. They were chosen for their algorithmic structure that allows us to work with pupils on, among other themes, algebra and algorithmics (including coding). Finally, I give details of mathematical and historical extensions