Triceratops

Es un poemario donde se funde la racionalidad y la belleza en poemas. Que caen como un rayo electrificando el espíritu. Algunos tan ruidosos, otros livianos como una una hoja seca de otoño.

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this 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...

Caprichosa, cruel y extravagante, Cleopatra pervirtió a los grandes hombres de Roma, primero a Julio César, después a Marco Antonio, apartándolos de su alta misión y destruyendo sus vidas. Una mujer clave en el escenario político de su tiempo que despertó pasiones que hicieron temblar imperios.

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.