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La teoría de conjuntos es una rama de las matemáticas, y cuya dedicación de este capítulo, es gracias al matemático, Ferdinand Ludwing Philipp Cantor, quien es considerado el padre de la Teoría de Conjuntos, debido a ello, es que, en el año 1874, salió su primer trabajo revolucionario, con respecto a la teoría de conjuntos.

Learn over 90 words with the newest addition to the beloved bilingual board book series that has sold over 1 million copies! Discovering your first words in Spanish and English is easy and fun with this cheerful board book with bright collage illustrations that introduce colors, numbers, shapes, animals, and more! Your little learner will discover that azul means blue, cinco means five, and caballo means horse along with many other everyday words. This new, updated board book edition of the oversized favorite My Big Book of Spanish Words is the perfect first bilingual book for the youngest...

There is a contest at a school to design a new playground. The students use blocks to build their models. As they build, they use three-dimensional shapes. Some students build a train out of blocks for the younger students to play on. Can you guess which three-dimensional shape they use for the train's wheels? Read to find out which design wins.

In this inspiring Spanish-translated biography, readers will learn about the life of Wilma Rudolph, the first American woman to win three gold medals at one Olympics. Readers will feel engaged and inspired as they read about Rudolph's incredible journey from a young girl with polio, to her first encounter with track and field, to becoming one of the best Olympic athletes of her time! A timeline of Rudolph's life, a glossary, and index are provided for further understanding of the content and improvement in vocabulary.