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

Spanish Language Edition A Special Bible for the Pre-reading Years THE PRESCHOOLERS BIBLE - Builds a delight in Bible learning for 3s through 5s - All the important values will come to focus in this simple Bible - Builds your child's life and character through Bible truth - The next step up from The Toddlers Bible. Don't miss it! Has your child delighted in The Toddler's Bible? Now is the time to make the next step. Move up to The Preschoolers Bible, for 3s through 5s. This is a delight to read, rich with character-building values for that vital pre-reading age.-V. Gilbert Beers

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

Few natural forces seem as much like magic as magnets. Perhaps that’s why magnets are so fun! Young scientists will love learning about amazing magnets, both natural and man-made. They’ll discover how magnetism is harnessed to help us in many ways. This STEM-supportive volume contains comprehensible text and photographs of students and scientists utilizing magnets. It also includes a simple, fun concluding activity to encourage readers to use this super science tool themselves.

Este libro explora los fundamentos del Jiu Jitsu, bajo los contenidos para grados iniciales (cinturones blanco, amarillo y naranja). En él se explican detalladamente los diferentes fundamentos, divididos en dos secciones: fundamentos teóricos y fundamentos técnicos. Es un texto indispensable en la biblioteca de todo practicante de Jiu Jitsu, sea este principiante, avanzado o maestro.