Marco Polo

In each book in this series, a boy speaks about one of four dinosaurs. The text stimulates the reader’s imagination and considers the characteristics of each dinosaur, highlighting the features that distinguish it from the others.

Mars is perhaps the most thrilling planet these days. With rovers exploring its surface and manned missions in the works, people are wondering if Mars is our next home! In this highinterest book, readers will learn more about Earth's neighbor, including what its climate and surface are like, why it's called the Red Planet, and about the recent discovery of water on its surface. They'll learn all this while solving "Your Mission" math problems that complement and support the text. This motivating volume is an engaging way to explore key aspects of science and math curricula.

¿Cómo funcionan juntas las palancas, los martillos y las cuerdas de un piano para hacer música? ¿Cómo afectan su sonido el tamaño y la forma de la campana de una trompeta? Encuentre las respuestas a estas preguntas, y más, con este libro de STEAM que despertará la curiosidad sobre los temas de STEAM a través de ejemplos del mundo real. Creado en colaboración con la Institución Smithsonian, presenta un desafío STEAM práctico que es perfecto para los espacios de creación y que guía a los estudiantes paso a paso a través del proceso de diseño de ingeniería. Establezca...

"This oversized book introduces children to the alarming number of species that are endangered, threatened or, unfortunately, extinct. It includes amphibians, birds, mammals, reptiles, and fish, devoting an entire page to each animal. Readers will learn the threats facing each one, where each one lives or lived, including the type of habitat, its diet, size, and ongoing conservation efforts."