This micro-credential provides you with tools and strategies to develop and strengthen your students' abilities to apply number operations. You will examine multiple methods students may use when adding, subtracting, multiplying, and dividing, and recommended pedagogy to support them as they learn and put meaning to the operations. The intended audience for this micro-credential is all Elementary Math Teachers and the difficulty is medium. This micro-credential is grounded in research from the What Works Clearinghouse (WWC) Practice Guide: Improving Mathematical Problem Solving in Grades 4 through 8.