Antonio Berni

Las reservas de petróleo de la Tierra son limitadas, pero ¿cómo pueden haber desaparecido de la noche a la mañana? ¿Se tratará de una conspiración internacional? Cuando descubreas que el origen del desastre está en el espacio exterior, sientes miedo por primera vez en tu vida. Una misteriosa galaxia más allá de la Vía Láctea está extrayendo el petróleo terrestre a través de pajitas láser. La economía mundial y la vida, tal y como las has conocido hasta ahora, están en peligro si no consigues evitar el desastre.

Dar las gracias (Giving Thanks) uses intriguing primary sources to teach students about the first Thanksgiving along with modern-day celebrations of Thanksgiving. The clear, descriptive images and simple phrases will engage students in reading and build their social studies content knowledge. For use in the classroom or at home, this Spanish book includes a simple glossary and index to introduce informational text features to young readers and provide additional reading support.

Get a close-up look at animals in the zoo, from appearance to behavior to babies. This series uses vivid photos to compare life in the wild and life in captivity in terms of habitat, activity, and diet.

There is a contest at a school to design a new playground. The students use blocks to build their models. As they build, they use three-dimensional shapes. Some students build a train out of blocks for the younger students to play on. Can you guess which three-dimensional shape they use for the train's wheels? Read to find out which design wins.