El dinero y el comercio en nuestro mundo: Read-Along eBook

When the Louisiana Territory was added to the United States in 1803, it about doubled the size of the young nation. It took years to clarify its boundaries and explore every square mile. How this momentous purchase came to be and its implications on the future of the United States are explained in detail in this book. Uncomplicated maps and simple language help developing readers and those in need of review to understand the many changes in this land that started with its purchase in 1803.

¡Hola, hijo de Newton! ¿Así que quieres crear una máquina para teletransportarte e un segundo a Hawái? ¿Y a veces piensas hacer un pequeño Big Bang para tener un universo a tu disposición? ¿O incluso en ocasiones viajar cinco minutos al pasado para seguir durmiendo y no tener que despertar para ir a clase? De la mano de Javier Santaolalla, doctor en física, investigador del CERN y Youtuber, descubrirás cómo lograrlo. En este libro encontrarás un montón de información que hará que tu cerebro explote. Así que ¡ve con cuidado! ¿Listo para que te estalle el cerebro?

Students will develop their math skills while engaged in reading about Yosemite National Park. This book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach geometry concepts like calculating perimeter and area. Text features include a glossary, an index, captions, and a table of contents to increase students’ vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, math charts and diagrams, and sidebars provide many opportunities for students to practice their developing math skills, and apply what...

Practice two-digit addition and subtraction while planning a family reunion! This charming title encourages young readers to use subtraction skills and STEM concepts to help plan the reunion by determining how many people are attending and how much the family will need to accommodate everyone. Add up the tallies to determine where the reunion should be! Calculate how many children are attending by subtracting the number of adults from the number of total guests! Examples like these and more pair with helpful mathematical charts and vivid images to make useful skills like addition and...