La secreta mision del 6.21

Presenta varios experimentos en cronometría. Para estudiantes de primaria (grados 4-6) y de secundaria (grados 7-9).

Take a journey into the wild world of reptiles and amphibians! Readers will learn about crocodiles, lizards, snakes, tortoises, and salamanders. Featuring a glossary, index, colorful images and charts, intriguing facts, and clear, informative text, readers will be sure to be enthralled as they move through this engaging, Spanish-translated book.

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...

En los sueños del joven Likango se repite cada noche la espantosa aparición de una hiena tuerta, la misma que mató a su madre cuando él tenía seis años. Otros hechos inquietantes, como el descubrimiento de un misterioso cadáver cerca del poblado, le empujan a salir en busca de respuestas. Por el camino conoce a Yembela, una enigmática muchacha de otra tribu, y juntos se enfrentarán a una oscura conspiración que pretende sembrar la comarca de terror y muerte.