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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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