Medir la velocidad (Measuring Speed)

Provides information on the tiny reptiles, including their use of color as a defense, their climbing skills, and their ability to grow back a missing tail.

Let’s Make a Volcano Spanish Edition. What do you know about a volcano? When a mountain erupts, it explodes! Hot melted rock, called lava, comes out of its top and flows down the side of the mountain! People need to keep away from real volcanoes, but you can have fun making your own volcano!

This book tells of several indigenous groups and what we know about their lives and customs based on archaeological discoveries and chronicles of the first Spaniards to encounter them. This title also contributes to the overall knowledge and understanding of these Mexican cultures, which play an important part in the history of the ancient world. Este libro cuenta cómo en Aridoamérica florecieron variados grupos indígenas. Lo que sabemos sobre su vida y sus costumbres es resultado de los descubrimientos arqueológicos y las crónicas de los primeros religiosos y militares españoles que...

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.

Een schrijver van beschouwende teksten raakt in een intrige verwikkeld met zijn redactionele assistente.