In this fun and engaging book where math meets literacy, Schwartz does for ratio and proportion what he did for numbers in his best-selling How Much Is a Million? Trivia fans and aspiring scientists alike will revel in these pages.
英文書
David M. Schwartz
James Warhola
4 - 8
圖畫書, 系列
好奇心
人體, 動物, 數字/數學, 概念教授
