Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. Research spanning nearly a century has found that mathematics plays an important role ...

Students’ use of personal mobile devices (PMDs), including smartphones, tablets, and laptops, in mathematics classrooms globally has become feasible due to the implementation of the bring your own ...

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Note: For our more recent in-depth analysis of the middle class, read “The State of the American Middle Class” (May 2024). The middle class, once the economic stratum of a clear majority of American ...

1 School of Computer Science, Northwestern Polytechnical University, Xi'an, China 2 Key Laboratory of Big Data Storage and Management, Ministry of Industry and Information Technology, Xi'an, China ...