Investiguemos las fuerzas y el movimiento (Investigating Forces and Motion)

En el libro se describe una tormenta el?ctrica, se explica qu? son los rayos y los truenos y se indica qu? hacer para protegerse durante una tormenta.

"Los patios de juegos son lugares estupendos para jugar con tus amigos. Pero si no tienes cuidado, te puedes lastimar. Si sigues estas reglas de seguridad, te divertirás en todo tipo de patio de juegos." --From publisher's descripton.

Beginning readers will be captivated by the creatures they meet in this Spanish translation of Prehistoric Creatures. The simple text describes ancient animals that swam the seas, soared through the skies, and roamed the Earth long before people existed. Each book describes a group of dinosaurs that shared one or two fascinating features. Dazzling illustrations help bring these amazing creatures to life!

The Industrial Revolution brought important changes to America. People began migrating to cities for work, and immigrants began to arrive in American in larger numbers than ever before as they looked for new employment opportunities. Readers explore the impact of the Industrial Revolution on U.S. migration and immigration patterns. As readers learn about essential social studies curriculum topics, engaging historical images and detailed primary sources hold their interest. This transformative period in American history comes alive for readers with each turn of the page.