MTEL Middle School Mathematics 47 Includes 21 competencies/skills found on the MTEL Middle School Mathematics test and 125 sample-test questions. This guide, aligned specifically to standards prescribed by the Massachusetts Department of Education, covers the sub-areas of Number Sense and Operations; Patterns, Relations and Algebra; Geometry and Measurement; Data Analysis, Statistics and Probability; and Trigonometry, Calculus and Discrete Mathematics.