@SFOMuseum Twitter Posts This is SFO Museum's archive of the @SFOMuseum Twitter account.
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During the early twentieth century, the idea that children should spend time at play or in school, led to toys that encouraged learning. At mid-century, a large school-aged population triggered an urgency for new, more rigorous mathematical curricula in the US. #MathAtSFO . This tweet was posted on April 11, 2022.