Zero! The Number That Almost Wasn’t by Sarah Albee, illustrated by Chris Hu (Charlesbridge, 40 pages, grades 3 and up). It’s hard to imagine a world without zero, but for much of human history, calculations were made without it. This book begins with a look at some of the earliest people to use the concept that came to be zero: Babylonians, Mayans, and Indians. Zero came to be accepted in the Arabic world, and European traders to that area brought the idea back to Europe, where it was met with…derision and scorn. While some mathematicians enthusiastically embraced zero, other Europeans mistrusted something that came from a different part of the world and continued to use Roman numerals. The invention of the printing press helped spread the word about zero, and when it was finally universally accepted, it opened the door up up to the complex ideas of modern calculus and physics. Includes additional information about zero and some of the other words we use for the concept, a map of places mentioned in the book, a bibliography, a list of math books for younger readers, a “blurry” timeline of zero, and some notes about the art.
This is a fascinating story of something most of us don’t think about, but which has been a key to scientific and technological advancement. The history of its evolution shows the dangers of not being open to the contributions of other cultures. There’s a lot of information and a huge span of history covered, making me wonder exactly what ages to recommend it for. I can see some older elementary students finding it interesting, but I think it could also be used in middle school or high school STEM classes.
The Five Sides of Marjorie Rice: How to Discover a Shape by Amy Alznauer, illustrated by Anna Bron (Candlewick, 40 pages, grades 2-5). As a child, Marjorie Rice was fascinated by shapes and arts. She learned to read at an early age, starting second grade at the age of five. Despite her interests and intelligence, her parents encouraged her to pursue a career as a secretary, and she didn’t go to college. Marjorie married and had five children. As they grew up, she started reading her son’s Scientific American and particularly enjoyed Martin Gardner’s “Mathematical Games” column. She was intrigued by one column about the problem of finding pentagons that could be tessellated infinitely without gaps. Gardner stated that all such pentagons had been discovered, but a month later, a reader discovered a new one. This inspired Marjorie to look for new ones on her own, and she eventually found four more. In 1995, she was recognized at a Mathematical Association of America meeting with a standing ovation, a true amateur who was motivated solely by her own interests and passion for shapes and art. Includes an author’s note about her personal connections to Marjorie Rice; additional information about the problem Marjorie worked on; information on how to discover a shape; a bibliography; and a couple of photos.
This engaging biography is an inspiration to follow your passions, no matter where you are in life. The storytelling is lively, and I particularly enjoyed the illustrations that do a great job of bringing Marjorie’s work to life. I struggled a little to understand exactly what she was working on, and like the previous book, this is one that may be enjoyed more by older readers with more of a mathematical background.