Cómo cambia el agua (How Water Changes)

This book describes dump trucks called off-highway trucks, explaining their operating equipment and dumping beds, fuel, and jobs.

A selection of dazzling, full-color graphic novels offer an appealing way to deliver social studies content, chronicling the lives of inspiring individuals, from important historical figures to famous musicians.

Depression is an unfortunately common mental health issue that many people don’t know how to address. In this straightforward, practical guide, readers will learn how they can identify and help a friend who is suffering from depression. Written in a compassionate tone, this guide separates out fact from fiction, providing an informative list of myths and facts to dispel common incorrect notions about depression as well as a thoughtful list of questions readers can ask their guidance counselor about a friend’s depression and seeking help. The result? Empowered readers who can lend a hand...

Families can be big or small, but all resemble each other in one aspect: they have a past and a present that, is also part of a broader history, that of a culture or race, or that of the world. The reader will see that family trees are used both by historians and everyday people who trace generations of relatives. Although family trees imply blood relations, the ties of love and friendship are often just as important.

El koala es un marsupial que, en estado natural, sólo vive en Australia. Igual que las hembras de todos los marsupiales, como el canguro, las hembras de koala poseen una bolsa o marsupio, donde llevan a las crías y donde éstas se alimentan con la leche de las mamas. En este volumen, conocerás su forma de vida y sus costumbres.