John Brown: El Ataque a Harpers Ferry/John Brown's Raid on Harpers Ferry

An introduction to taipans, snakes from Australia and New Guinea, describes the three different kinds of taipan, physical characteristics, life cycle, habitat, and predatory behavior.

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

París. Año mil cuatrocientos. Robin, un muchacho, pasa a formar parte de una banda de maleantes que planea el robo del Santo Grial. El chico no se imagina que esta será la gran aventura que cambiará totalmente el curso de su vida. ¿Adónde le conducirá este apasionante peregrinaje? Una novela de aventuras en la que se muestra la necesidad de honestidad y ética.

Examines the apparent connection between birds and dinosaurs by comparing fossils, dinosaur bones, and modern birds.