Cómo funcionan los ecosistemas

(back cover) Un ¡rbol geneal3gico es el dibujo de un ¡rbol que muestra a tus antepasados. Ellos son personas de tu familia que nacieron antes que to. Tus antepasados son muy especiales, porque forman parte de tu vida y de tu historia. Dibuja un ¡rbol y p©gale fotos de miembros de tu familia, los mayores en las ramas de arriba, los menores en las de abajo, y to y tus hermanos en la base del tronco. Luego, escribe sus nombres bajo cada foto. ¡Y ya tienes hecho el ¡rbol de tu familia!

Winning the American Revolution was just the first step. After defeating Great Britain, the American colonies were united in name only. How would this independent nation be governed? During the summer of 1787, representatives went to Philadelphia to solve the problem. The result, the U.S. Constitution, created a new government, establishing the foundations of a free nation and setting a new course for history.

Born into slavery, Frederick Douglass relied on his own determination and ingenuity to carve a path to freedom. Once free, he dedicated his life to improving the lives of others and fighting for justice and equality. This inspirational Spanish biography uses primary sources to engage students in learning about the fascinating life of Frederick Douglass. Students will build their literacy skills as they are immersed in social studies content. Text features include a glossary and an index to increase comprehension and academic vocabulary.

The early nineteenth century in the United States was a study of contrasts. On the one hand, the Jazz Age brought cultural liberation, vivacity, and reckless consumption; on the other, the Great Depression brought poverty and desperation to millions. Explore these periods in American history through the eyes of the people who lived them.