Lo que los fósiles nos enseñan sobre la Tierra (Investigating Fossils)

Advances in science have changed our world, all thanks to the scientists behind important discoveries. Some of the most important discoveries have come from female scientists, who were as unique for their work as they were for being trailblazers in a male-dominated industry. This text offers a biographical treatment of such important scientists as Marie Curie, Rachel Carson, and Jane Goodall, as well as others who have made it possible for women of the future to have a career in science. Age-appropriate text, fact boxes, historical and modern images, and a comprehensive timeline complete the...

We love our pets. And our pets love us. Animals need lots of care. This engaging Spanish book teaches beginning readers how to take care of pets. Engage students in reading as they develop their early childhood literacy skills. With TIME For Kids content, this full-color book is aligned to state and national standards, and introduces students to simple informational text features.

Esta obra pretende desarrollar la comprension estrategica del jugador y asi permitirle mejores resultados.

Todos nos hemos cambiado de casa alguna vez en nuestra vida y posiblemente recordemos cómo nos sentíamos. Cuando nos mudamos teniendo niños, tenemos que ayudarles a sentirse seguros entre tanto ajetreo por los cambios que una mudanza conlleva. Ayudarles a entender que las cosas cambian, hasta el lugar donde vivimos y explicarles también que la gente que les quiere seguirá siendo parte de sus vidas. Esta fabulosa guía ayudará a los niños a valorar lo positivo de una mudanza, entendiendo los temores consecuentes al conocer gente y lugares nuevos y la tristeza de las despedidas. Les...

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.