A picture-book biography of Scotland-born William Playfair (1759-1823) the inventor of the line graph, bar graph and pie chart.

Born in Scotland over 250 years ago, William Playfair was a dreamer who ñsaw the world differently from other people.î Unfortunately, this skill didnÍt easil

INTERNATIONAL BESTSELLER • A bestselling dystopian novel that tackles surveillance, privacy and the frightening intrusions of technology in our lives—a “c

Each page includes an attention-grabbing graph, chart, or table with questions to help kids read and interpret the data. Includes bar and line graphs, circle gr