¿Verdad o mentira?

Más del 90% de la biodiversidad del planeta Tierra son microorganismos. Por otra parte, la idea que tiene la gente de los microbios no puede ser más negativa: son unos seres arteros, sigilosos y nocivos que aprovechan cualquier ocasión para ponernos enfermos, y que, incluso, pueden causarnos la muerte. Pero los microbios, también realizan el reciclado de los elementos químicos, producen el oxígeno que respiramos, nos permiten digerir los alimentos y nos defienden de muchas enfermedades. Los microorganismos aportan a la biosfera muchos más beneficios que inconvenientes. Para empezar a...

In this enthralling, Spanish-translated nonfiction title that features informational text, vivid photos, stimulating facts, and colorful diagrams, readers will learn all about tornadoes and hurricanes--from how they are formed to where are they are most common. This 6-Pack includes six copies of this title and a lesson plan.

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Students will learn about California’s gold rush by examining maps, letters, images, and art from that time. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with information and primary...

Know Your NumbersFind the hidden numbers in these exciting counting books. Count by ones, twos, fives, and tens!