Dinosaurios del 1 al 10

In a dream, Joaquín meets various animals and discovers that they have very different tails which prove very useful to them.

It was September 14, 1814, and America and Great Britain were at war. Frances Scott Key watched from the deck of a British ship, where he was being held captive, as cannons exploded around them. After 25 hours, the fighting ceased and Key peered through the clearing smoke, looking for some sign as to the outcome of the battle. Was the American flag still flying? His wartime experience inspired Key to write a poem, which was later set to music and became America’s national anthem. This book tells the story of the inspiration behind our national anthem, which helped transform the flag into a...

A dictionary tailored for the Latin American market is an ideal supplement to the middle school curriculum and includes up-to-date definitions, example sentences, synonyms and antonyms, and more. Original.

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...

¿Qué se necesitará para enviar personas a Marte en los próximos 25 años? Los estudiantes aprenderán que la resolución de problemas es un componente esencial de la misión planificada de la NASA a Marte. Este libro en español combina habilidades matemáticas y alfabetización, y usa ejemplos prácticos del mundo real de resolución de problemas para enseñar matemáticas, artes del lenguaje y contenido STEM. Los estudiantes aprenderán a resolver problemas mientras leen contenido de gran interés. El glosario, el índice y la tabla de contenido mejorarán la comprensión de los...