Ruth's blog

Radiant fishing corner

Theme: geometry In one of the chapters of his book Mathematics Recreativa, mathematician and storyteller Malba Tahan talks about…

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the calculating student

From the book “Recreation Mathematics”, by Malba Tahan Doctor Túlio, a mathematics teacher, to punish one of his students, young…

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Brazil's flag

Why green and yellow? by Ruth Salles We saw the FLAG OF BRAZIL so much at the Olympics that I wonder: Who…

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