The terrible yowling of the supernatural spirit called the banshee is calling young mathematicians to learn more about shapes. Readers will love the delightful illustrations of banshees that aid them as they're learning about attributes of two-dimensional and three-dimensional shapes such as their angles, faces, and sides. Fact boxes provide information about creepy stories of banshees passed down through the years. Questions throughout this highly motivating narrative allow readers to assess their understanding of the geometry concepts.