¿Qué Es Una Familia?

Acércate a mirar un mundo fascinante que con frecuencia se oculta a la vista. Los bichos están en nuestro entorno, pero ¿qué sabemos realmente sobre ellos? En este libro se revela la vida secreta de esos pequeños animales: cuándo y cómo evolucionaron, qué aspecto tienen, cómo funciona su organismo, dónde viven y cuál es su comportamiento.

Hurricanes takes you inside one of nature's most powerful events! Warm water and wind can quickly spin into a deadly storm. Dramatic photos show the damage huge hurricanes leave behind, and safety tips help you protect yourself from danger. Spanish Edition

There is a contest at a school to design a new playground. The students use blocks to build their models. As they build, they use three-dimensional shapes. Some students build a train out of blocks for the younger students to play on. Can you guess which three-dimensional shape they use for the train's wheels? Read to find out which design wins.

In this stimulating, Spanish-translated nonfiction book, readers will discover the various types of friction--including rolling friction, sliding friction, fluid friction, and static friction--and the huge impact it has on nature, machines, and our lives. In addition, readers are encouraged to perform basic experiments to assist in the understanding of friction, kinetic energy, and water resistance. With real-life examples, colorful images, accommodating graphs and charts, and informational text, this title will inspire and engage children.