El fuerte (The Fort)

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.

Find three-dimensional shapes in a fort! This fun title, that has been translated into Spanish, challenges children to find cylinders, cones, and pyramids in a fort while introducing them to terms like base, vertex, face, and more! Young readers will improve their STEM skills and learn how to recognize these three-dimensional shapes all around them! Vibrant images, clear examples, and helpful mathematical diagrams work together to make geometry seem easy and fun!

Una proposición lógica plitogénica P es una proposición que se caracteriza por muchos grados de valores de verdad con respecto a muchos valores de atributos correspondientes (o variables aleatorias) que caracterizan a P. Cada grado de valor de verdad puede ser clásico, difuso, intuicionista difuso, neutrosófico u otra lógica de extension difusa. Al final, se calcula una verdad acumulativa de P.

This book presents conventions, mathematical concepts, definitions and applications central to the geometric modeling of solids, shells and wires (engineering jargon) embedded in 3D space. Currently, software is available for geometric modeling of technical or natural scenarios. However, the models built frequently fail in supporting the subsequent engineering computing and simulations. Only after repeated iterations and re-design, the models permit engineering / science simulations. This book endows the reader with the basic mathematical concepts needed to ensure that the geometric models...

The principal objective of the author when writing this book is to offer a book that the students will enjoy to read, at the same time learning concepts of algebra, for which brief sentences, clear explanations and lots of examples full of details are used. Various changes are included in this sixth edition: the topic of addition and subtraction of fractions has been improved, the introduction of solving equations with fractions, and they have added new examples and exercises.

Este libro está escrito tras años de experiencia de los autores en la docencia de asignaturas relacionadas con el Análisis Numérico. Su objetivo es modesto, pero no por ello carente de importancia. Por una parte, se proporciona al alumno una primera toma de contacto con las técnicas numéricas que le sirva para conocer un amplio catálogo de métodos que aproximan las soluciones de los problemas abordados (esencialmente, ecuaciones y sistemas lineales y no lineales, interpolación, derivación e integración). Por otra, se intenta cimentar una sólida base teórica que permita conocer...