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Månadens problem, februari 2022

Du kan ladda ner alla problemen som en pdf. Alla_problem_feb_22 Vi publicerar lösningar och kommentarer i mitten av mars 2022! Skicka in lösningar Vi utmanar alla enskilda, grupper och klasser att skicka in lösningar, kommentarer eller förklaringar till hur ni löst problemen. Bidragen kan vara digitala eller på papper. Inkomna lösningar publiceras ibland och kan […]

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Small group instruction to improve student performance in mathematics in early grades

A recent randomized evaluation conducted in Norway investigated the effects of a small group mathematics instruction on student academic achievement in elementary school. The study involved 159 elementary schools and 14,891 students in 10 municipalities in Norway. Schools were randomly assigned to receive the intervention or business as usual. [Från Best Evidence in Brief] Läs

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Evolution ‘Landscapes’ predict what’s next for COVID virus

Studies that map the adaptive value of viral mutations hint at how the COVID-19 pandemic might progress next. Mathematically modeled “landscapes” that describe the relative fitness of various mutations can in theory be used to project how SARS-CoV-2 and other viruses could evolve in the future. Läs vidare [Quanta Magazine]

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Can you solve it? Gödel’s incompleteness theorem

Kurt Gödel’s incompleteness theorem [published in 1931] states that in any reasonable mathematical system there will always be true statements that cannot be proved. The result was a huge shock to the mathematical community, where the prevailing view was an unshakeable optimism about the power and reach of their subject. Läs mer [The Guardian]

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