El ciclo del nitrógeno (The Nitrogen Cycle)

Susi tiene un diario, y en él escribe todas las cosas que le van sucediendo cada día. Paul también tiene un diario en el que escribe lo que le sucede. ¿Coincidirán los puntos de vista de los niños sobre los mismos acontecimientos? Una historia sobre la amistad y el devenir de la vida.

L'Àlex és un cuinar amb talent, brusc i excèntric.L'Annette és una jove canadenca, dolça i sense experiència però amb mil idees sota el braç.L'Àlex i l'Annette, dos cors trencats que trobaran entre els fogons el condiment de la seva pròpia felicitat.Àcida, fresca i enginyosa, però també tendra i enigmàtica, per les pàgines de Sal de vainilla hi sobrevola un misteri i una passió continguda, però també un amor incondicional per la cuina.

Five and counting! So far, astronomers have discovered five dwarf planets in our solar system. Pluto, which was once thought of as the ninth planet, is today classified as a dwarf planet. This book looks at the current dwarf planets, characteristics, size, and orbital patterns, as well as the three rules scientists follow to characterize these tiny, round space objects. Every day new discoveries are being made. Who knows how many dwarf planets we will find in the future! This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, ...

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...