Universal Math Content / Middle School 1. NUMBERS AND OPERATIONS 1.1. Natural Numbers 1.2. Rational Numbers 1.3. Sets 1.4. Integers 1.5. Ratio and Proportion 1.6. Factors and Multipliers 1.7. Square Roots 1.8. Exponential Numbers 2. ALGEBRA 2. Algebra 3. GEOMETRY AND MEASUREMENT 3.1. Basic Concepts of Geometry 3.2. Angles 3.3. Triangles 3.4. Polygons 3.5. Measurement of Length 3.6. Equality and Similarity 3.7. Area 3.8. Circle and Circular Region 3.9. Geometric Solids 3.10. Measuring Liquids 4. DATA ANALYSIS 4.1. Data Collection and Evaluation 4.2. Data Analysis 4.3. Probability