This volume from the Super Simple Body series introduces the heart and the circulatory system in short paragraphs of text accompanied by helpful illustrations. While the topic may not lend itself to “super simple” treatment or even truly simple vocabulary, the text provides some basic, useful information. Small photos as well as digital pictures and labeled diagrams help children visualize the structure and functions of the heart and related organs. Individual pages and double-page spreads present topics such as the left side of the heart, valves, circulation, arteries, and capillaries. To encourage active learning, the book includes several hands-on projects. . . .