En este libro, los estudiantes aprenderán que todos los animales tienen distintas partes del cuerpo y comportamientos que han ido cambiando con el paso del tiempo. Entenderán que estos… More →

The worst mass-extinction event happened on Earth 252 million years ago. Three-quarters of all life on Earth was wiped out. The result? The rise of the dinosaurs. A species that evolved into… More →

Planet Earth formed over 4 billion years ago. As Earth cooled over millions of years, an ocean formed. Scientists believe this ocean once covered the entire planet. Discover the changes our… More →

What do animals do in fall? Find out as you explore the relationship between animals and their environment. The My Guide to the Seasons series provides a unique and fun approach to science… More →

What do animals do in spring? Find out as you explore the relationship between animals and their environment. The My Guide to the Seasons series provides a unique and fun approach to science… More →

What do animals do in summer? Find out as you explore the relationship between animals and their environment. The My Guide to the Seasons series provides a unique and fun approach to science… More →

What do animals do in winter? Find out as you explore the relationship between animals and their environment. The My Guide to the Seasons series provides a unique and fun approach to science… More →

The Apache peoples are Indigenous to the Southwest United States. Their language, culture, and history still guide them today. In this introduction, readers will learn about who the Apache… More →