Apuntes de matemáticas

Two books in one, this oversized volume shows readers the plants, root systems, insects, fossils, animals, mines, gems, minerals, and man-made wonders such as tunnels, subways, submarines, pipes, cables, and power lines that can be found underground or underwater in an unforgettable visual way. Each page takes you deeper and deeper under the waves or through layers of earth.

"Hace un año, en una clase de español, Sylvie conoció a Otto, que soñaba con volar como los pájaros. Pero un día, él se fue y la dejó sin noticias. ¿Qué significa ahora el telegrama que envía desde un pequeño pueblo del norte de España?"--Page 4 of cover.

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. They’ll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Don’t worry, they’ll be happy to learn that (hopefully) we have millions of years left!

Read Along or Enhanced eBook: Encourage readers to learn about the various animals that need help and what they can do to make a difference through volunteerism in this inspiring. Spanish-translated nonfiction title. Readers will discover different programs and organizations that work to protect animals, animal habitats, and endangered species through vibrant images and charts and informational text. Featuring a list of helpful and useful websites, this nonfiction title encourages readers to take part in animal activism in any way they can--from baking homemade dog biscuits to exploring...