Los sólidos (Solids)

Readers will be amazed to discover that every time they climb onto bicycles and ride like the wind, they are defying gravity! This book explains the physics and history behind bicycles, skateboards, and surfboards. Readers learn what happens from the simplest movement of rolling forward to more complex tricks and stunts of jumping and spinning. Readers will never look at bikes, skateboards or surfboards the same way again.

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

There is an amazing muscle inside your body. It pumps blood and keeps you healthy. What is it? Your heart! Read all about it in this colorful, Spanish-translated title.

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

Un día de verano, debajo de un árbol, la hermana de Alicia estaba leyendo un libro. Alicia la escuchaba, pero era un libro muy aburrido. De repente pasó un conejo blanco con levita corriendo y gritando: "¡Se me hace tarde!". Con el pretexto de alejarse de ahí, Alicia siguió al curioso conejo. Y así comienza una larga serie de aventuras en El País de las Maravillas... One summer day, under a tree, Alicia's sister was reading a book. Alicia listened to her, but it was a very boring book. She suddenly passed a white rabbit in a frock running and yelling: "I'm late!" On the pretext of...

¡Descubre a Olivia, la protagonista de una serie de cómics repleta de aventuras, misterio, acción, personajes divertidos, un toque de magia, ecología y mucho humor! Con lo tranquila que estaba Olivia en la ciudad, y a sus padres les ha dado por mudarse a un pueblo en la montaña, en mitad de la nada. Y todo porque su madre tiene que salvar a la región de una devastadora invasión de pájaros gigantes. Qué rollo de verano, por aquí no hay nada con lo que entretenerse... ... Salvo una misteriosa pastora y sus lanosos perros lanosos, un par de monstruos y un genio sivergüenza. ¡Parece...

So you think you're a martial arts master, but do you know the difference between kung fu, kendo, and karate? Students will learn about various martial arts as they practice comparing numbers. This nonfiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, intriguing sidebars, practice problems, and math diagrams make learning math relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading concepts. An in-depth problem-solving...

The overall concept of money usually comes easily to young learners who curiously watch the exchange of money for goods from an early age. However, noticing the distinguishing characteristics of different kinds of money, such as coins and paper notes, is a bit trickier. This helpful and engaging book is an excellent companion for those who are learning to discern the different types of money. It also touches on the valuable skills of sorting and classifying, which are important concepts in early elementary math curricula.