La resolución de problemas

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.

¿Sabías que las medusas pican a sus presas? Aprende más sobre las fascinantes criaturas que viven en cada océano de la Tierra. Las fotos frescas y vibrantes involucran a los lectores jóvenes mientras construyen las primeras habilidades de lectura de no ficción. Zap! Did you know that jellyfish sting their prey? Read on and learn more about the fascinating creatures that live in every ocean on Earth. In this Spanish-language edition, carefully leveled text and fresh, vibrant photos engage young readers as they build early nonfiction reading skills.

Read Along or Enhanced eBook: Susan B. Anthony spent her life fighting for equal rights for women. Readers will learn all about her interesting and inspiring life in this engaging biographical reader that features detailed images, informational, Spanish-translated text, and a timeline of Anthony's life.

Snowflakes are one of nature's most fascinating wonders. Learn how snowflakes form with this Spanish STEAM reader that builds literacy skills and features a hands-on STEAM challenge.