El gran libro de las matemáticas del Ogro feroz

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these sea giants face-to-face: The Archelon was similar to a turtle, but its shell was made of crossed rib bone covered in rubbery skin! The Mososaurs had huge pointy jaws and grew to be fifty feet long! The Ichthyosaurs looked a lot...

Martina se dispone a dormir, pero ni se imagina que no será una noche cualquiera... En su habitación aparece Onira, una señora mágica, aunque un tanto estrafalaria, quien vela para que los peques tengan sueños bonitos. Y, naturalmente, no está sola, no podría con todo ese importante trabajo: cuenta con unos ayudantes algo especiales. Claro que no siempre las cosas salen como quiere Onira, pero eso ya lo veréis... Un obra de teatro ideal para leer en casa o para trabajar en clase, donde, a través de sus divertidos personajes y pegadizas canciones, compartir mensajes de amistad,...

What is a responsibility? How can you be responsible for yourself? Read this book to learn about how and why to behave responsibly.

In graphic novel format, follows the adventures of Max Axiom as he explains the science behind light.