# Take it to the Mat

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# Elementary

### Algebra

- Associative and Commutative Properties - December 3, 2001
- Distributive Property - January 29, 2002
- Equations and Inequalities - March 11, 2002
- Fact Families and Equation Solving - October 22, 2001
- Multiplication Property of Zero - February 18, 2002
- Multiplication, Area, and the Distributive Property - March 19, 2001
- Order of Operations - January 7, 2002
- Patterns and Functions - November 12, 2001
- Unknowns and Variables - October 1, 2001

### Data Analysis & Probability

- Creating and Interpreting Bar Graphs I - January 2004
- Creating and Interpreting Bar Graphs II - February 2004
- Creating Circle Graphs - April 2003
- Creating Histograms - April/May 2004
- Creating Line Plots - October 2003
- Creating Picture Graphs - February 2003
- Creating Stem-and-Leaf Plots - March 2004
- Creating Tally Charts and Bar Graphs - January 2003
- Examining Common Mistakes in Bar Graphs - March 2003
- Foundational Probability - April 2004
- Interpreting Bar and Circle Graphs - May 2003
- Interpreting Line Plots and Creating Pictographs - November 2003
- Interpreting Pictographs and Creating Frequency Tables - December 2003
- Line Graphs and Interpreting Them - April 15, 2002
- Modeling Subtraction II - April 2005

### Fractions, Decimals, Percents

### Geometry

- Classification of Quadrilaterals - April 3, 2000
- Classification of Triangles - January 24, 2000
- Definition of Solid - September 18, 2000
- Distributive Property - January 29, 2002
- Formulas for Area of Triangles and Quadrilaterals - December 11, 2000
- Geometric Notation - February 5, 2001
- Geometric Root Words I - September 2004
- Geometric Root Words II - November 2004
- Geometric Root Words III - December 2004
- Modeling Area and Perimeter - February 20, 2001
- Multiplication, Area, and the Distributive Property - March 19, 2001
- Orientation, Regularity, and Convexity of Polygons - November 13, 2000
- Pythagorean Theorem - May 6, 2002
- Smorgasbord of Misconceptions - April 30, 2001
- Symmetry About Lines and Points - January 22, 2001
- Vocabulary of Polygons and Polyhedra - March 2006

### Measurement

### Notation

### Number

- Array Models for Multiplication - October 16, 2000
- Associative and Commutative Properties - December 3, 2001
- Casting Out Nines - November 27, 2000
- Changing Fractions to Decimals - February 2005
- Division by Fractions - March 20, 2000
- Division with Zero - March 6, 2000
- Fact Families and Equation Solving - October 22, 2001
- Factors, Multiples, Primes, and Composites - April 24, 2000
- Interpreting ..Less Than and ..Is Less Than - October 2, 2000
- Modeling Subtraction I - March 2005
- Modeling Subtraction II - April 2005
- Multiplication Property of Zero - February 18, 2002
- Multiplication, Area, and the Distributive Property - March 19, 2001
- Number Sense vs. Algorithms - March 5, 2001
- Reading of Numbers and the Word And - February 7, 2000
- Rounding and Estimation I - October 2005
- Rounding and Estimation II - November 2005
- Rounding and Estimation III - December 2005
- Rounding and Estimation IV - January 2006
- Smorgasbord of Misconceptions - April 30, 2001
- Writing Remainders - January 2005

### Special Editions

### Vocabulary

- Classification of Quadrilaterals - April 3, 2000
- Classification of Triangles - January 24, 2000
- Definition of Solid - September 18, 2000
- Digits, Numbers, and Numerals - October 30, 2000
- Geometric Root Words I - October 2004
- Geometric Root Words II - November 2004
- Geometric Root Words III - December 2004
- Interpreting ..Less Than and ..Is Less Than - October 2, 2000
- Orientation, Regularity, and Convexity of Polygons - November 13, 2000
- Symmetry About Lines and Points - January 22, 2001
- Vocabulary of Polygons and Polyhedra - March 2006

# Middle

### Algebra

- Applications of Linear Inequalities - December 17, 2001
- Breaking Down Rules of Exponents - January 22, 2002
- Completing the Square - April 8, 2002
- Expressions with Like Terms - September 24, 2001
- Fitting Lines to Data - April 29, 2002
- Functions, Domain, and Range - November 5, 2001
- Meanings of Evaluate, Simplify, and Solve - January 31, 2000
- Mental Equation Solving - October 15, 2001
- Methods of Factoring Trinomials - February 11, 2002
- Opposites and Inverses - February 12, 2001
- Order of Operations and Solving Linear Equations - March 13, 2000
- Proportional Reasoning IV - April 2005
- Ratio, Rate, and Slope - November 26, 2001
- Scientific Notation, Part I - November 6, 2000
- Scientific Notation, Part II - November 20, 2000
- Simplifying Radicals - May 2006
- Square Roots of Negative Numbers - December 2004
- What Variables Represent - April 2006
- Zero and Negative Exponents - October 2004
- Zero Product Property - March 4, 2002

### Data Analysis & Probability

- Comparing Data with Double Bar Graphs I - March 2004
- Comparing Data with Double Bar Graphs II - April 2004
- Comparing Data with Stacked Bar Graphs - May 2004
- Creating and Interpreting Comparative Boxplots - February 2004
- Creating and Interpreting Comparative Histograms - January 2004
- Creating and Interpreting Comparative Line Plots - October 2003
- Creating and Interpreting Comparative Stem-and-Leaf Plo - December 2003
- Creating and Interpreting Comparative Stem-and-Leaf Plo - November 2003
- Creating Boxplots - May 2003
- Creating Graphs for Categorical Data - February 2003
- Creating Graphs for Continuous Numerical Data - April 2003
- Creating Graphs for Discrete Numerical Data - March 2003
- Fitting Lines to Data - April 29, 2002
- Probability and Odds - October 23, 2000
- Types of Data - January 2003

### Fractions, Decimals, Percents

- Common Denominators I - January 2006
- Comparing Fractions I - October 2005
- Comparing Fractions II - November 2005
- Comparing Fractions III - December 2005
- Decimal Places in Division of Decimals - May 15, 2000
- Decimal Places in Multiplication of Decimals - February 14, 2000
- Methods of Comparing Fractions - January 16, 2001
- Multiplying Whole and Mixed Numbers - March 2006
- Proportional Reasoning I - January 2005
- Proportional Reasoning II - February 2005
- Proportional Reasoning III - March 2005
- Proportional Reasoning IV - April 2005
- Ratio, Rate, and Slope - November 26, 2001

### Geometry

### Measurement

### Notation

### Number

- Breaking Down Rules of Exponents - January 22, 2002
- Casting Out Nines - March 12, 2001
- Common Denominators I - January 2006
- Comparing Fractions I - October 2005
- Comparing Fractions II - November 2005
- Comparing Fractions III - December 2005
- Divisibility Rules, Part I - March 26, 2001
- Divisibility Rules, Part II - April 23, 2001
- Opposites and Inverses - February 12, 2001
- Proportional Reasoning III - March 2005
- Proportional Reasoning IV - April 2005
- Ratio, Rate, and Slope - November 26, 2001
- Scientific Notation, Part I - November 6, 2000
- Scientific Notation, Part II - November 20, 2000
- Square Roots of Negative Numbers - December 2004
- Zero Product Property - March 4, 2002

### Special Editions

### Vocabulary

- Classification of Quadrilaterals - February 28, 2000
- Classification of Triangles - April 10, 2000
- Digits, Numbers, and Numerals - December 4, 2000
- Meanings of Evaluate, Simplify, and Solve - January 31, 2000
- Proportional Reasoning I - January 2005
- Proportional Reasoning II - February 2005
- Symmetry About Lines and Points - January 29, 2001

# High

### Algebra

- Arithmetic Sequences and Linear Functions - March 13, 2000
- Completing the Square - January 2005
- Connections to Factoring by Grouping - May 1, 2000
- Effect of Adding a Constant on Center and Spread - April 2005
- Effect of Changing b on Quadratics - March 2006
- Functions - November 6, 2000
- Horizontal and Vertical Line Tests - December 4, 2000
- Inverse and One-to-one Functions - November 20, 2000
- Linking Parabolas and the Quadratic Formula - March 12, 2001
- Locating a Point and Weighted Means - November 2005
- Locating a Point between Others - October 2005
- Logarithmic Transformations of Data - December 10, 2001
- Logarithms Are Exponents - December 2005
- Meaning of Slope and Intercept in Models - October 29, 2001
- Meanings of Evaluate, Simplify, and Solve - October 2004
- Methods of Factoring Trinomials - February 11, 2002
- MIsapplications: Projectiles - November 2004
- Product of Radicals Rules - January 31, 2000
- Relations - October 23, 2000
- Rules of Exponents - May 15, 2000
- Solving of Equations with Absolute Value - October 9, 2000
- Solving Systems of Equations with Matrices - September 17, 2001
- Square Roots and Absolute Value - April 23, 2001

### Analysis

- Behavior of Graphs at x-intercepts - February 14, 2000
- Calculus without Calculus I - March 18, 2002
- Calculus without Calculus II - April 22, 2002
- Divergence of the Harmonic Series - February 2005
- Logarithmic Transformations of Data - December 10, 2001
- Parametric Equations - November 19, 2001
- Rational Functions and Asymptotes - October 8, 2001

### Calculus

### Data Analysis & Probability

- Appropriate Use of Line Graphs - March 27, 2000
- Combinations and Combination Formulas - March 26, 2001
- Concept of Mean as a Balance Point - February 28, 2000
- Creating and Interpreting Boxplots - October 2003
- Creating and Interpreting Comparative Boxplots I - November 2003
- Creating and Interpreting Comparative Boxplots II - December 2003
- Effect of Adding a Constant on Center and Spread - April 2005
- Effect of Outliers on Center - January 2006
- Fitting â..Eyeballâ. Lines to Scatterplots - January 2004
- Fitting Median-Median Lines to Scatterplots - March 2004
- Interpreting Lines of Fit - February 2004
- Locating a Point and Weighted Means - November 2005
- Logarithmic Transformations of Data - December 10, 2001
- Making Predictions with Lines of Fit - April 2004
- Meaning of Slope and Intercept in Models - October 29, 2001
- Normal Distribution Errors - February 25, 2002
- Permutations and Permutation Formulas - January 16, 2001

### Geometry

### Measurement

### Notation

### Number

### Physics

### Special Editions

### Technology

### Trigonometry

- Deriving Trig Identities, Part I - January 2003
- Deriving Trig Identities, Part II - February 2003
- Finding Altitudes of Distant Objects, Part I - March 2003
- Finding Altitudes of Distant Objects, Part II - April 2003
- Finding Altitudes of Distant Objects, Part III - May 2003
- Measurement Error in Trig Applications - April 2006
- Parametric Equations - November 19, 2001
- Pythagorean Triples - September 25, 2000
- Vectors and Components - January 14, 2001