Continentes de la Tierra (Earth’s Continents)

El mundo está lleno de cuestiones científicas y técnicas que parecen sacadas de un universo de ciencia ficción. Pero... ¿se suponía que iba a ser así? Los científicos nos prometieron coches voladores, turismo espacial y robots superinteligentes. Pero aunque vemos avances en todos esos campos cada día, la realidad es ligeramente distinta. En este libro se habla de ese futuro prometido y de dónde estamos: del origen de internet, de los primeros ordenadores y hackers y de la carrera espacial, con explicaciones e ilustraciones fáciles de entender. Sin olvidar la importancia de la...

Small and large, short and tall, little and big, these are all words that help us describe size. This math concepts volume doesn't just "tell"; it shows early learners the difference between concepts, introduces them to synonyms, and helps them learn to sort a group according to size. Classification is an important concept for the early elementary mathematics student, but the text and photographs in this book, including dogs, fish, and birds, make it fun!

Describes where fossil fuels come from, their uses and forms, the harm they cause to the environment, and sources of renewable energy.

Introduce students to capital resources and how they work as part of our economy. This Spanish-translated text will teach young readers about the economy, while building their literacy skills and social studies content knowledge. Simple informational text features help students navigate the text, while primary source documents and images keep students engaged.