Flora Y Tecla / Milly and Tilly

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.

Una visión personal para todas las edades de este importante evento que cambió el mundo.En 1989 cayó el muro de Berlín, un muro que no solo separaba las dos Alemanias, sino que dividía la Europa democrática y la Europa comunista. Hoy, 20 años después, el prestigioso ilustrador checo Peter Sís, por medio de sus diarios, comentarios y sobretodo ilustraciones, nos da a conocer el antes y el después de ese suceso tan importante de la historia reciente.

Children often assume that being fair means that everyone gets the same number of cookies, but at the heart of fairness is consideration, respect, and caring for others. Your readers will encounter real-life situations in which young people figure out how to act fairly. They'll meet Ben and Jane who are playing on the swings at recess while other children wait to use the swings. What is the fair thing to do? Each spread consists of one of these relatable scenarios along with a full-color photograph. Fun, accessible text encourages readers to consider how they treat others as they discover...

School is a place everyone goes to, but are they all the same? They certainly aren’t. Learn about schools around the world and what kids eat for lunch, when their summer vacation is, and even how long they have to go each day. It may make you think school isn’t so bad after all! Get your backpack on and get ready to visit schools around the globe! This title will allow students to ask and answer questions such as who, what, where, when, why, and how to demonstrate understanding of key details in a text. • World map • Bold keywords with phonetic glossary • Multicultural