¿Qué hace el presidente? (What Does the President Do?)

Newton's laws aren't the easiest science topics to digest. Struggling readers likely find understanding them even harder. This volume breaks down the topics of force and motion to its most basic and understandable parts, perfect to introduce to readers having a hard time or students looking to review for class. Written in succinct language, each chapter contains fact boxes and graphic organizers to aid all readers as they move from speed, to velocity and on.

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

El carácter de Kolmogórov se forjó en una época de revoluciones sociales y guerras mundiales. Vivió el estalinismo, la posterior rectificación de errores y el inmovilismo que luego daría paso a la perestroika. Aunque siempre se consideró a sí mismo un matemático puro, una parte esencial de su obra fueron sus investigaciones aplicadas a otras ciencias. Sus esfuerzos estaban regidos por una idea clara - discernir las diferencias y similitudes entre orden y caos. Mucho más que cualquier otro matemático, amplió los dominios y la comprensión humana del azar. Reinó en una escuela...

Learning about a career as a molecular biologist is the perfect introduction to the practical applications of STEM. This career-focused book aims a microscope at molecular biology, helping readers understand DNA, genes, and the systems within a cell. Readers will also learn about advances in the field and how to work towards a job as a molecular biologist. Accessible text is paired with vivid visuals to keep readers’ interest as they learn more about this STEM topic. A graphic organizer and fun fact boxes present additional information to ensure a dynamic learning experience.

La enseñanza de la Historia Nacional en nuestro país se ha caracterizado siempre por hacernos ver a sus protagonistas como frías estatuas de bronce o piedra, seres inexpresivos e inhumanos que nos observan con Mirada ausente desde su pedestal. Es por ello que hemos decidido pedir a los propios protagonistas de la Independencia que nos cuenten vida y obra con aciertos y errores incluidos, desde que nacieron y hasta el momento previo a su muerte. Esto con el único propósito de quitarle a la historia patria esa fría y aburrida solemnidad con la que también se suelen presentar los...

Introduces readers to amphibians and the concept of classes of animals. Simple text describes the common features and behaviors of amphibians as well as offering many examples of creatures in this group.