Matemáticas. 4 Primaria. Nuevo proyecto Trotamundos. Trimestres

Farmers use tractors to plow their fields. Tractors are also used on construction sites. The biggest tractors are as wide as a road. Learn more about these machines in Tractors, an AV2 media enhanced book

Learn all about the history and cultural significance that the exciting Iditarod race event holds around the world today. This title is complete with historical and modern photographs, as well as a glossary and a closer look at the rules for mushers and their dog teams. Aligned to Common Core Standards and correlated to state standards. Abdo Kids Jumbo is an imprint of Abdo Kids, a division of ABDO. Translated by native Spanish speakers and immersion school educators.

After facing off with the Mogadorian ruler and almost being annihilated, the Garde go into hiding. They must learn to master their Legacies and learn to work together as a team. When they receive a sign from Number Five -- a crop circle in the shape of a Loric symbol -- they know they are close to being reunited. But could it be a trap? Time is running out, and the only thing they know for certain is that they have to get to Five before it's too late.

Samuel Temkin es Catedrático Emérito de Rutgers University en Nueva Jersey, Estados Unidos. Reconocido internacionalmente por sus investigaciones y libros en el campo de la Acústica, el doctor Temkin se ha dedicado en los últimos años a la historia del Nuevo Reino de León, de la cual ha publicado varios artículos de investigación y dos libros, el último sobre Gaspar Castaño de Sosa.