In the early days, NASCAR racing machines went from the family garage to the racetrack. Times have changed, however, and today's NASCAR racers are among the most high-tech-and… More →

Leo is a Stone Age, geometry genius. His cat, Pallas, is not. In this innovative series, which supports STEM fields, Leo identifies six key geometric concepts and puts them to use in his… More →

Leo teaches his cat Pallas all about circles by applying his knowledge of geometry to their Stone Age world. Engaging illustrations and stories provide a fun introduction to math concepts,… More →

Leo teaches his cat Pallas all about cubes by applying his knowledge of geometry to their Stone Age world. Funny illustrations and stories provide a humorous introduction to math concepts.… More →

Leo teaches his cat Pallas all about lines by applying his knowledge of geometry to their Stone Age world. Funny illustrations and stories provide a humorous introduction to math concepts.… More →

Leo teaches his cat Pallas all about spheres by applying his knowledge of geometry to their Stone Age world. Entertaining illustrations and stories provide a fun introduction to math… More →

Leo teaches his cat Pallas all about squares by applying his knowledge of geometry to their Stone Age world. Funny illustrations and stories provide a humorous introduction to math concepts,… More →

Leo teaches his cat Pallas all about triangles by applying his knowledge of geometry to their Stone Age world. Entertaining illustrations and stories provide a fun introduction to math… More →

In this fun new series, stone age genius Leo solves everyday problems by inventing clever solutions. Each title explores a problem, then looks at possible answers and the science behind its… More →

Leo teaches his cat Pallas all about buildings and structures by applying his knowledge of science to their stone age world. Engaging illustrations and stories provide a fun introduction to… More →