Medida del tiempo en las carreras (Timing Races) (Spanish Version)

En el acuario (At the Aquarium) engages students in reading about aquariums as they learn how to calculate volume. Volume helps aquarium designers figure out everything from the shapes and sizes of tanks to how much water is needed to fill them. This nonfiction Spanish text includes mathematical charts to help students practice calculations. With a glossary, an index, and easy-to-read text, students will build their math and reading skills while they are engaged in reading high-interest content.

Del bullir y la sed (Prólogo) Como lector y escritor de versos, no como crítico, que no lo soy, es que me atrevo a hablar de Semántica de un tornillo enamorado, de Luis Perozo Cervantes, libro armado con tres en cierto modo plaquettes relacionadas entre sí (situaciones, se advierte, teórica, metafórica y poemática), donde el joven autor, de carácter a mi ver ciertamente expansivo, da suficiente muestra de a la vez sentido de contención, humor, retórico y, con su indispensable ironía, dados los tiempos, de lo romántico –o del romanticismo en sus varias acepciones. Para una...

Thomas Edison is considered by many to be one of the greatest inventors of all time. His creations changed the world, but there was more to his life than just his inventions. Readers of this engaging volume will learn all about the man behind the innovations. This fascinating biography introduces important subjects and encourages a further interest in history. Concise and accessible text paired with vibrant photographs is sure to captivate audiences of many ages and levels.

For those who enjoy unconventional solutions, the author offers a wide range of all-time paradoxes that defy your deductive and calculation skills with impossible logical truths, and helps you to learn how to overcome the traps of false truths.

These poems speak about the nature of the Chilean countryside, of its animals, its aromas, and its stars. These are verses that invite us to direct our gaze from the Earth to the sky, from the smallest things to the most magnificent. The rhymes and poems compiled in this anthology introduce children to the works of Gabriela Mistral, and allow them to enjoy this poetry that is "infused with heart" by the only female Latin American author to win the Nobel Prize for Literature. Poemas que hablan de la naturaleza propia del paisaje chileno, de sus animales, de sus aromas y de sus astros. Versos...