graphs

Picture Books and Primary Sources: Lines, Bars and Circles: How William Playfair Invented Graphs by Helaine Becker and Marie-Eve Tremblay

By Tom Bober on 11/20/2019 • ( 0 )

There are certainly historically based picture books about inventions that I’ve read before, but none may have surprised me more than Helaine Becker’s Lines, Bars and Circles. I had never attributed the creation of the line, bar, and circle graphs… Read More ›

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