Pappas, Theoni. (1997). The adventures of Penrose: the mathematical cat. San Carlos, CA: Wide World Publishing/Tetra. Penrose, the cat, is curious about math. In the story, Penrose takes the students on an adventure of mathematical concepts. These concepts are not simple addition and subtraction; they are binary numbers, infinity, Pascal triangles, fractals, tangrams, magic squares, and many others. Although the concepts are more difficult, Penrose makes them easy to understand. Each short story ends with a quiz and there is an answer key. Although this is a fantasy book with a “talking animal”, the cat (p.197), at the same time, it is an informational book because it has facts and information (p.272). The storytelling is combined with illustrations
