Nacimientos bestiales

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.

Introduces fruits, uses simple comparisons to explore this group, and offers suggestions for healthy eating.

Computer science is all around us, at school, at home, and in the community. Anyone can learn computer science, even at the elementary school level. This book delves into essential computer science concepts using age-appropriate language and colorful images. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience. The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.

In this poetic memoir, which won the Pura Belpré Author Award and was named a Walter Dean Myers Award Honoree, acclaimed author Margarita Engle tells of growing up as a child of two cultures during the Cold War. En este poético libro de memorias—ganador del premio Pura Belpré de autor, finalista del premio de YALSA de no ficción y premio de honor Walter Dean Myers—la aclamada autora Margarita Engle recrea su infancia, que transcurrió a caballo entre dos culturas durante la Guerra Fría. Margarita is a girl from two worlds. Her heart lies in Cuba, her mother’s tropical island...