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  2. Third grade - Wikipedia

    en.wikipedia.org/wiki/Third_grade

    Grade 3 students learn how to work on projects on their own and with others. This may start as early as second grade and first grade as well. Social skills, empathy and leadership are considered by some educators [citation needed] to be as important to develop as the academic skills of reading, writing and arithmetic.

  3. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    Each grade is determined by analyzing the scan reflectance profile (SRP), an analog graph of a single scan line across the entire symbol. The lowest of the 8 grades is the scan grade, and the overall ISO symbol grade is the average of the individual scan grades. For most applications a 2.5 (C) is the minimal acceptable symbol grade. [36]

  4. Impact of the COVID-19 pandemic on education - Wikipedia

    en.wikipedia.org/wiki/Impact_of_the_COVID-19...

    Students take end-of-year exams in Tabriz, Iran, 6 June 2020. 4 March: UNESCO released the first global numbers on school closures and affected students on 3 March. It reported that 22 countries on three continents had enacted preventive measures including the temporary closure of schools and universities, impacting 290.5 million students ...

  5. List of Chinese inventions - Wikipedia

    en.wikipedia.org/wiki/List_of_Chinese_inventions

    The eight standard grades of module timber components in the Yingzao Fashi, with grade I being the largest and grade VIII the smallest, were used to determine the ultimate proportions and scale of a building as a whole, as all timber hall types—palaces, mansions, ordinary houses, and pavilions—were hierarchically categorized along the lines ...