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

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...

Presents a thorough explanation about how the notion of crime, justice, and punishment has evolved in Western history, presenting a variety of specific crimes and revealing the impact they have had on society.

Ideal for young children. Sturdy books that will stand up to wear and tear with full-color illustrations and clear, simple text. Each one has a convenient carry-along handle.

Spanish language edition. This extraordinary counting book is full of astonishing illustrations and amazing facts about the fascinating world of insects. Once again, Jerry Pallotta's perfect blend of information and humor has created a favorite for children and adults.

Repleto de juegos, puzles y troquelados, este gran libro interactivo estimula la imaginación y da pie a la creatividad. Los niños podrán conocer el mundo de Monstruos University y explorar todos sus detalles, pasando horas de diversión solos o acompañados con las actividades y juegos que encierran sus páginas.