If you buy something using links in our stories, we may earn a commission. Learn more. A few minutes into a 2018 talk at the University of Michigan, Ian Tobasco picked up a large piece of paper and ...

In 1999, while sitting at a bus stop in Cuernavaca, Mexico, a Czech physicist named Petr Šeba noticed young men handing slips of paper to the bus drivers in exchange for cash. It wasn’t organized ...

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The first few years of school weren’t easy for RuoHan Chen. He had emigrated from China at age 4, just a few years before starting kindergarten. The language and culture were still new to him, which ...

Re "The New Math: Three Concepts in Two Years; Common Core drives new look at math instruction," July 22 article: In 2008, the National Mathematics Advisory Panel recommended that schools prepare more ...

Frank A. Farris does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...