La historia de las innovaciones victorianas: Fracciones equivalentes (The History of Victorian Innovations: Equivalent Fractions)

Ser casi adolescente puede resultar muy fastidioso. Nadie lo sabe mejor que Greg Heffley , inmerso en el duro ambiente del colegio, donde los chicos bajitos que aún no han dado el estirón tienen que compartir los pasillos con grandulones que ya se afeitan dos veces al día. En Diario de Greg, el escritor y dibujante Jeff Kinney nos presenta a su antihéroe. Como este dice en su diario: No creas que voy a estar todo el tiempo “Mi querido diario por aquí” y “Mi querido diario por allá”. Por suerte para todos, lo que Greg Heffley dice que va a hacer y lo que realmente hace son cosas...

Explores the different types of land on Earth including deserts, seashores, plains and explains why they change.

Families can be big or small, but all resemble each other in one aspect: they have a past and a present that, is also part of a broader history, that of a culture or race, or that of the world. The reader will see that family trees are used both by historians and everyday people who trace generations of relatives. Although family trees imply blood relations, the ties of love and friendship are often just as important.

Germs. Everybody has them! Some germs help people. Some germs can harm people. Add and subtract with tens as you learn all about germs. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning arithmetic easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section provides additional...