El ciclo de la roca (The Rock Cycle)

You've only got one day to spend at the carnival-how do you make the most of your time? Students will learn how to measure time while reading about a fun-filled day at a carnival! This fiction Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The challenging practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of...

Images of Rainbow Fish's undersea world, from a red starfish to a brown snail, reinforced by facing pages in the appropriate color, teach the colors. On board pages.

When Nina, Maricela, and Alejandro decide to help some homeless people living near their school in Los Angeles, the issue of homelessness becomes personal when they discover that it is affecting a friend. With help from their 5th grade teacher, they decide to take action and help those in need. This 32-page realistic fiction book features full-color illustrations, diverse characters, and a short chapter format. Capture the interest of reluctant and struggling readers with hi-lo text.

Presents a typical day of a bulldozer driver, with the safety equipment he puts on, the levers, beeper, and blades he uses in its operation, and what he does to get the bulldozer ready for the next day.

La cultura medieval islámica ha dado figuras espléndidas. Omar Jayyam, poeta y filósofo, algebrista y astrónomo, es sin duda la más fascinante de todas. Su pensamiento fue heterodoxo, su saber inmenso, su obra variadísima. De lo que nos ha llegado de su poesía no siempre es fácil distinguir lo auténtico de lo apócrifo, y de lo que sabemos de su vida, la historia de la leyenda. Su más importante aportación algebraica, la resolución sistemática de las ecuaciones cúbicas cortando cónicas, se procurará poner al alcance de un lector moderno sin alterar las ideas de fondo.