This item is estimated to be available in September 2018. Please contact customer service at 800-858-7339 to pre-order.People immigrate to the United States for many reasons. Why do they decide to come? How do they travel? What happens when they arrive? Data is in the details as you discover the history of immigration to the United States! This Spanish math reader builds literacy skills and math content knowledge, combining informational text, problem-solving, and real-world connections to help students explore math in a meaningful way. The Let's Explore Math sidebars feature clear charts and diagrams that make learning the concepts easy and fun. The Problem Solving activity enhances the learning experience and promotes mathematical reasoning, and the Math Talk section provides critical thinking questions to help facilitate rich discussions while developing students' speaking and listening skills. Text features include content-area vocabulary, dynamic images, a table of contents, a glossary, an index, and an answer key. Aligned to state and national standards, this high-interest title will engage students in reading and learning.