Lines, Bars and Circles: How William Playfair Invented Graphs March 21, 2017 / Best Children's Nonfiction, Best New Books, Book Reviews, Elem. Nonfiction / 2 Comments […] Lines, Bars and Circles: How William Playfair Invented Graphs Read More »
Graphs! Graphs! Graphs! February 3, 2014 / Best Children's Nonfiction, Book Reviews, Elem. Nonfiction / Leave a Comment Graphs! Graphs! Graphs! Read More »
