Breve diccionario de términos literarios

Until just over 150 years ago, northern Mexico extended thousands of kilometers farther than its current border with the United States. Many different indigenous groups flourished in that region before the Conquistadors arrived. What we know about their lives and customs is the result of archeological discoveries and the chronicles of the first Spanish priests and soldiers that had contact with them.

Introduces different kinds of light, the properties of light, and how light can create shadows of different shapes and sizes.

A special field trip on the magic school bus allows Ms. Frizzle's class to get a first-hand look at the major parts of the body and how they work.

Ricardo the pack rat has collected so much stuff that his rat hole is full. Includes facts about pack rats.