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 →

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

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

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

In a busy street market, one curiosity shop has many intriguing objects. Digby and his sister discover that each object is at the center of a great story which the shop's owner Mr. Rummage… More →