¿Cuántos Agujeros Tiene Un Anillo?

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Lightyear es la nueva película de Disney y Pixar sobre el origen de Buzz Lightyear, el héroe que inspiró el juguete. Se trata de una historia de ciencia ficción llena de acción y aventuras. Antes de que Buzz se convirtiera en el Guardián Espacial que todos conocemos, era un joven en una misión audaz y peligrosa. Viaja al infinito y más allá con esta novela que cuenta la historia de la película y contiene ocho páginas a color con datos sobre todos los personajes ¡y un póster!

What makes something a good value? Why is it important to use money wisely? How will creating a budget help you purchase a new bike? This engaging Spanish book will teach students financial literacy through the use of real-world examples while incorporating 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 contents will...

This Title Explains What An Ecosystem Is And How The Plants And Animals Within An Ecosystem Rely On And Effect Its Existence. Different Types Of Ecosystems Are Described, As Well As The Food Webs Within Them. How Some Changes To An Ecosystem Can Be Good And How Some Harmful Changes Can Destroy Them. Teaches Students What An Important Role They Can Play In Keeping These Intricate Ecosystems Alive.