Learn how to create algebraic equations on a tour of our solar system! Introduce students to variables, expressions, and equations in this Spanish math reader. This book challenges students to learn more advanced mathematical and STEM skills, using exciting astronomy examples to keep readers engaged. Students will practice familiar mathematical skills, like addition and subtraction, in a new way by forming equations. With eye-catching photos, easy-to-read text, and clear practice problems, this title makes mathematical concepts that could be seen as intimidating seem simple and fun.