Tras las huellas del ADN

Bacteria have a slimy reputation. They're too small to see with the human eye, so it's easy to let them slip past unnoticed. But, bacteria are part of our daily lives. In fact, they affect everything from milk to our moods. Get ready to zoom in on the hidden world of bacteria and explore the many ways that bacteria are being used in the modern world. This nonfiction reader seamlessly integrates the teaching of math and reading, and uses real-world examples to teach multiplication of mixed numbers. Text features include images, a glossary, an index, captions, and a table of contents to build...

A collection of poems evoking the lullabies sung by mothers to their children. Also includes three prose sections in which Federica Garcia Lorca, Gabriel Celaya, and Gabriela Mistral write about children's poety and lullabies.

Tres años después de sus andanzas en Quinteto de Buenos Aires, vuelve Carvalho. Y también vuelve Charo con la intención de orientar el futuro del detective. A pocos meses del final del milenio, Carvalho vive una historia de amor, sectas, espionaje y muerte. Convocado para seguir un curso de espía y reclamado por una extraña mujer que le envía faxes, primero enigmáticos, luego enamorados, Carvalho convive con la sospecha de que ha sido elegido para una finalidad que no puede controlar. Bajo el peso del eterno diseñador del mundo, el poder del dinero, el detective hace suya la ansiedad ...

Aprenda los colores del arco iris siguiendo un texto lírico. (Learn the colors of the rainbow through the lyrical, rhyming text!) "I’ve learned my colors: green, red, and blue, yellow, purple, orange, and now I’m through." From shiny red apples, to purple violets and yellow bumblebees, the high-quality pictures will have children learning colors quickly. Learn simple English words and phrases with the corresponding version Green, Green Froggy.