This book is designed for aspiring and practicing K-6 teachers who will work or are working with students in need of remediation and intervention with common mathematical concepts students struggle with most, including place value, addition and subtraction of whole numbers, multiplication, division, fractions, and time and money. This book analyzes the roots and causes of frequent error patterns in student work and offers implementable solutions for solving them and teaching lifelong math skills. A Data Analysis Sheet is presented as an example for each problem area and followed by a Math Improvement Plan that offers guidance on how to instruct students in need of additional intervention and prepare them with lifelong mathematics skills