Agujeros negros (Black Holes)

For many years, people believed there were nine planets that orbited the sun. Now we say there are eight. What happened to the ninth planet, Pluto? What are the different planets like? What exactly makes a planet a planet? These are the many intriguing questions answered with this high-interest book, crafted to be accessible for readers of all levels. Young astronomers will be especially fascinated by the stunning photographs and the "Make the Grade" fact boxes.

Muddy Creek in Edgewater, Maryland is the site of a major makeover. The land around the stream has worn down. Find out what caused Muddy Creek to erode, and the many steps involved in saving it. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process, from the initial research and brainstorming sessions, through the design and testing ...

In My Friend Has Down Syndrome, beginning readers are introduced to different characters who have Down syndrome, how Down syndrome may affect their actions, and how we can be good friends to people who have Down syndrome. Vibrant, full-color photos and carefully leveled text engage young readers as they discover how to empathetic and inlude all kinds of friends.

Esta novela aborda el drama de la guerra civil y el de miles de pequeñas guerras civiles. Historias personales (una por cada víctima y verdugo) que tuvo lugar cuando la contienda terminó y se impuso un silencio que duró medio siglo, bajo el cual palpitaban el dolor, los remordimientos, los recuerdos…

Esta recopilación de poemas se ha escrito para ti, amiga y amigo mío… Sirvan para otorgar un crecimiento en tu amor hacia el prójimo, para vivirlo de manera mayor al que vives hoy.