Yellowstar

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of data organization. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how data organization works in the real world. In this book, a class studies temperature throughout the course of a winter. This nonfiction book is paired...

"Cuando Daniel Hernández tenía veinte años, trabajaba como pasante con la congresista Gabrielle Giffords. El 8 de enero de 2011, alguien disparó contra Giffords. La agilidad mental de Daniel le salvó la vida a Giffords hasta que llegaron los paramédicos y la llevaron al hospital. Muchos han reconocido la valentía y heroísmo de Hernández, incluyendo al presidente Barack Obama. Sin embargo, aunque tal vez ese haya sido su momento más visible y de mayor fama, Daniel Hernández es un extraordinario individuo que ha tenido ya muchos logros en su corta vida y se propone conquistar muchos...

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

A simple introduction to the work of teachers, including the different types, equipment used, training, daily life, and other aspects of their job.