Explore estimation and geophysical predictions by learning about seismologists, volcanologists, and meteorologists in this digital resource! This exciting Spanish-translated nonfiction e-book showcases the importance of predicting and preparing for disasters in order to save lives. Volcanologists test gases on a volcano to predict eruptions! Meteorologists use Doppler radars to predict tornadoes! These data collectors use estimation in order to do this. Spanish readers can use sample problems to practice estimation with the help of easy-to-read informational text, clear mathematical charts and diagrams, and text features such as a glossary and index. This e-book encourages children to improve their problem solving and STEM skills.