La fuerza y el movimiento (Forces and Motion)

The US president is the face of the United States to the rest of the world. However, he or she doesn’t have unlimited power within the country. The president has certain powers given by the Constitution, including the ability to make treaties, appoint some important government officials, and veto laws. Readers learn the many duties of the president in simple, clear language appropriate for both younger readers and older readers looking for a succinct review of the topic. Fact boxes supplement the main content with important details about checks and balances, amendments, and more that affect...

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.

Un nuevo formato para la serie middle grade de ciencia más divertida. Pachi y su papá son fanáticos de la cocina, ¡y ahora compartirán sus recetas contigo! Además de entregarte la preparación de platos dulces, salados y algunos un tanto extraños, te revelarán cuál es la ciencia detrás de la cocina. ¿Por qué la cebolla no hace llorar si se corta cuando está hervida? ¿Por qué las frutas maduran? ¿Por qué pica el ají? ¡¿Por qué hay personas que sienten el cilantro con sabor a jabón? Sí!, ¡¡¡JABÓN!!! Encuentra respuesta a estas y otras preguntas raras junto a la...

The author describes a variety of strange animals including an African antelope, the sloth, and the angler fish.

Plants are the living things that have been on the planet longer. How do they manage to protect themselves if they can't move? Explore the different mechanisms that plants use to survive in different habitats.

Examines the apparent connection between birds and dinosaurs by comparing fossils, dinosaur bones, and modern birds.