Un día de trabajo de un astrónomo (A Day at Work with an Astronomer)

Without dentists, we wouldn’t know how to take care of our teeth! Readers will enjoy following this story’s narrator as they go for a check-up and cleaning at the dentist. The narrator learns how to brush and floss to keep their teeth healthy and clean. This book pairs a fun story with colorful illustrations to keep young readers and listeners engaged in the story.

Uncovers the secret codes that different animal species use to relate to each other, revealing that communication among certain animals is not different from human communication.

A delightful, imaginative story which explains the beauty that unfolds during the celebration of the Eucharist.

Este libro ofrece al estudiante de Química una amplia colección de cuestiones y problemas, explicados y resueltos, presentados en orden de dificultad creciente, muchos de los cuales fueron propuestos en Pruebas de Selectividad o en exámenes de Facultades Universitarias y Escuelas Técnicas. Pretendemos con ello complementar los contenidos teóricos de la asignatura, posibilitando la simultaneidad que debe existir entre toría y práctica, aunque ésta, frecuentemente, se manifieste como una situación idealizada de la realidad. Un libro diseñado, no para saber más, sino para entender...

Take a trip to the British Museum as you explore its fascinating objects and geometric shapes! This famous London museum was built for exploration - and for learning geometry. Learn about its history and artifacts as you build your geometry skills. This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems,...