La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Each book in this series looks at how to say colours in a different modern foreign language, with each spread within the book covering a different colour. This book looks at the colours in Spanish. Text on each page is in both English and Spanish, and simple, labelled photographs provide additional support. A "e;dictionary"e; at the end of each book gives all the words featured in both Spanish and English, and also includes a pronunciation guide.

Un libro ilustrado y escrito con lenguaje sencillo y cercano, desde una perspectiva neutra y sin cargas ideológicas, que ayudará a los niños a resolver sus dudas sobre religión y espiritualidad, para que aprendan a pensar por sí mismos y disfruten del aprendizaje. ¿Cuántas religiones hay? ¿Son importantes? ¿Qué es ser ateo? ¿Me puedo reencarnar en tigre? ¿Qué es la muerte? ¿Cuánto dura la eternidad? Si preguntas estas cosas a tus padres y te miran con cara rara, huyen despavoridos o simplemente se hacen un lío, no te preocupes. Hay interrogantes que a todos nos cuesta...

The sordid, thrilling, and comic story of two young lovers--affluent Lala and impoverished Guayi; examines the economic and social circumstances of Argentina and Paraguay to make sense of the characters' past choices and present misfortunes.

Have you ever wondered what Space Camp is like? Join Isabella as she moon walks through the Moon Room, takes a ride in a Multi-Axis Trainer, tackles the Mars Climbing Wall, and takes the helm at Mission Control. Along the way, you'll practice measuring time. This fiction math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice...