La fiebre del oro (The Gold Rush)

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

What do churros, macarons, and strudel have in common? In order to bake them successfully, pastry chefs must use fractions! Students will learn comparing fractions while engaged in reading about delectable desserts from around the world. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy,...

Students will develop their math skills while engaged in reading about the importance of honeybees. 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 place value 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 section provides additional learning and practice opportunities while challenging...

Rain, sunshine, warm fronts, and cold fronts. Have you ever listened to a weather report? Knowing the weather can help us plan ahead. But reporters aren’t the only ones who can track weather. You can, too! This nonfiction Spanish book explores the subject of meteorology in depth, and introduces students to important scientific concepts and vocabulary like anemometer, barometer, air pressure, warm front, cold front, rain gauge, probability, Celsius, Fahrenheit, and more. The colorful images, diagrams, sidebars, and text features will keep students connected to the text. Aligned to state and...

In this title, young readers must practice creating patterns with plants in order to maximize space in a small garden in the city, improving their mathematical and STEM skills. Vibrant images, practical examples, and helpful mathematical diagrams and charts engage readers while teaching them how simple it can be to use patterns in their daily life!

La mayoría de cristianos profesos observan el domingo. Sin embargo, el pueblo judío (y algunas otras personas) guardan el sábado (Sabbat). ¿Era este día sólo para los judíos, o solamente para la antigua Israel? ¿Establece el Nuevo Testamento al domingo como el Día del Señor? — o ¿está el sábado aún en efecto? ¿Hace esto alguna diferencia? De ser así, ¿cuál día es el día de reposo cristiano? ¿Puede esto ser PROBADO? eso es lo que haremos en este libro, asi que le invito a leerlo...

[English] What is the difference between a savanna and a prairie? How do bison, zebras, and other grazers avoid hungry grassland predators? Trek across the plant-covered landscape of this book, and find out what makes grasslands one of Earth's treasures. [Spanish] ¿Qué diferencia hay entre una sabana y una pradera? ¿Cómo escapan los bisontes y las cebras de los depredadores? Camina entre los altos pastos de este libro. Descubrirás por qué los pastizales son uno de los grandes tesoros de la Tierra.

Mammals are a very diverse group. From whales and dolphins that give birth in the water to platypuses that lay eggs, these life cycles can often seem very different. However, they’re very similar. Readers learn the basic structure of the mammal life cycle through simple language and accompanying diagrams that show the cycle step by step. The main content offers a way for struggling readers to more easily learn an important science curriculum topic, but can also be a great review tool for any reader.