Experimentos sencillos con sólidos y líquidos

An elementary introduction to the workings of the human body, the skeleton, skin, circulation, and nervous system.

Rhyming verse describes the good food, decorations, and stories when grandmother arrives for the annual celebration of the Mexican holiday, Day of the Dead.

Aunque tener buenos amigos es una aspiración permanente, no es fácil. Para ello, hay que saber y querer tener amigos y poner los medios adecuados. La improvisación -"vivir sobre la marcha"- no da buenos resultados. Y así, todo esfuerzo para poner por obra las nociones básicas acerca de la amistad da buenos resultados. En estas páginas encontrarás esas ideas.

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...