La historia de: los sistemas numéricos: Valor posicional

Learn the history of number systems with this engaging Spanish book! This text combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn place value while reading about the number systems of the Egyptians and Romans, and also learn important vocabulary terms like cuneiform, binary systems, roman numerals, and more! The full-color images, math charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and...

For anyone who has always wanted to draw but has never known where to begin, this book demystifies all the techniques and processes of drawing and provides everything someone might need to begin drawing the world. It contains diagrams and exercises along with examples from some of the greatest artists in history, such as Picasso and Matisse, to teach the skills needed to draw like a professional.

¿Por qué las alcancías tienen forma de cerdito? Si todos los billetes cuestan lo mismo, ¿por qué valen diferente? ¿Qué es el trueque? Aprender a tomar decisiones, a negociar (sí, ¡el intercambio de estampas en el patio es la primera y más dura de las transacciones a las que nos enfrentamos!), y entender la diferencia entre precio y valor es fundamental. Este libro ilustrado nos muestra de una forma muy dinámica, divertida y eficaz las claves básicas para aprender a gestionar la mesada y entender qué es el dinero. ENGLISH DESCRIPTION Why are piggy banks shaped like pigs? If all...

Excite your fifth grade students with this captivating nonfiction title, which explores the many technological advancements made throughout history. The interesting and intriguing facts found within the informational text, along with vivid images, diagrams, and charts, inspire curiosity in readers as they learn about miraculous inventions like the hologram, 3D printing, virtual reality technology, personalized medicine, and bionic body parts. This Spanish-translated nonfiction title will engage and encourage readers to imagine the next big technological innovation that could change the world. ...

Thomas Lang es un ex policía y ahora pistolero a sueldo. Un día recibe la visita de un tal McClusky, quien le ofrece cien mil dólares por asesinar a Alexander Woolf, un empresario americano con negocios en Inglaterra y Escocia. Indignado, Lang rechaza el encargo y decide, en cambio, advertir a la víctima del peligro que corre: una buena acción que no quedará impune.