Two boys work with fractions and mathematical concepts. In the 1980s, media attention settled on the dangers of an immensely popular roleplaying game, Dungeons and Dragons, as a new cause of psychosis ...
Many children never master fractions. When asked whether 12/13 + 7/8 was closest to 1, 2, 19, or 21, only 24% of a nationally representative sample of more than 20,000 US 8th graders answered ...
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