Obedecer las reglas

La hibernación es un ciclo que algunos animales hacen cada año. La mayoría de la gente sabe que los osos hibernan. ¿Pero por qué hibernan? ¿Y qué otros animales hibernan? Hibernation is a cycle that some animals go through every year. Most people know that bears hibernate. But why do they hibernate? And what other animals hibernate?

What is global warming? Why are forests disappearing? How can air pollution be reduced? This timely series introduces children to key environmental issues of the 21st century. The books explore the causes and effects of different environmental crises and ways people are working to reverse humans' harmful effects on our planet.

The ancient Polynesians were amazing navigators who traversed the Pacific Ocean and settled in its many islands. How did they travel such extreme distances and know where they were going without the use of modern technology like smartphones, satellites, or even magnetic compasses to guide them? Learn the answer to these questions in this Spanish book that uses real-world examples to illustrate science concepts. Created in collaboration with the Smithsonian Institution, this Informational Text builds reading skills while engaging students' curiosity about STEAM topics. Packed with factoids and ...

SOY UNA HOJA es un libro de la serie ¡Hola, lector! que cuenta acerca de la vida de las hojas y sus funciones. A los chicos les encatará saber que cada una de las hojas del patio de su casa tiene una vida muy particular. El texto es sencillo y fácil de leer.

The early nineteenth century in the United States was a study of contrasts. On the one hand, the Jazz Age brought cultural liberation, vivacity, and reckless consumption; on the other, the Great Depression brought poverty and desperation to millions. Explore these periods in American history through the eyes of the people who lived them.