101+ Great Ideas for Introducing Key Concepts in Mathematics

A Resource for Secondary School Teachers
Second Edition
Alfred S. Posamentier - Mercy College, New York, USA
Herbert A. Hauptman - Hauptman-Woodward Medical Research Institute, Buffalo, NY
101+  Great Ideas for Introducing Key Concepts in Mathematics
May 2006 | 296 pages | Corwin
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Hardcover
ISBN: 9781412927055
Available from January 0001

Description

Multiply math mastery and interest with these inspired teaching tactics!

Invigorate instruction and engage students with this treasure trove of "Great Ideas" compiled by two of the greatest minds in mathematics. From commonly taught topics in algebra, geometry, trigonometry, and statistics, to more advanced explorations into indirect proofs, binomial theorem, irrationality, relativity, and more, this guide outlines concepts and techniques that will inspire veteran and new educators alike.

This updated second edition offers more proven practices for bringing math concepts to life in the classroom, including:

  • 114 innovative strategies organized by subject area
  • User-friendly content identifying "objective," "materials," and "procedure" for each technique
  • A range of teaching models, including hands-on and computer-based methods
  • Specific and straightforward examples with step-by-step lessons

Written by two distinguished leaders in the field-mathematician, author, professor, university dean, and popular commentator Alfred S. Posamentier, along with mathematical pioneer and Nobel Prize recipient Herbert A. Hauptman-this guide brings a refreshing perspective to secondary math instruction to spark renewed interest and success among students and teachers.

Contents

Preface

Preface

Acknowledgments

Acknowledgments

About the Authors

About the Authors

Introductory Idea

  • Coming to Terms With Mathematical Terms

Algebra Ideas

  • 1. Introducing the Product of Two Negatives
  • 2. Multiplying Polynomials by Monomials (Introducing Algebra Tiles)
  • 3. Multiplying Binomials (Using Algebra Tiles)
  • 4. Factoring Trinomials (Using Algebra Tiles)
  • 5. Multiplying Binomials (Geometrically)
  • 6. Factoring Trinomials (Geometrically)
  • 7. Trinomial Factoring
  • 8. How Algebra Can Be Helpful
  • 9. Automatic Factoring of a Trinomial
  • 10. Reasoning Through Algebra
  • 11. Pattern Recognition Cautions
  • 12. Caution With Patterns
  • 13. Using a Parabola as a Calculator
  • 14. Introducing Literal Equations: Simple Algebra to Investigate an Arithmetic Phenomenon
  • 15. Introducing Nonpositive Integer Exponents
  • 16. Importance of Definitions in Mathematics (Algebra)
  • 17. Introduction to Functions
  • 18. When Algebra Explains Arithmetic
  • 19. Sum of an Arithmetic Progression
  • 20. Averaging Rates
  • 21. Using Triangular Numbers to Generate Interesting Relationships
  • 22. Introducing the Solution of Quadratic Equations Through Factoring
  • 23. Rationalizing the Denominator
  • 24. Paper Folding to Generate a Parabola
  • 25. Paper Folding to Generate an Ellipse
  • 26. Paper Folding to Generate a Hyperbola
  • 27. Using Concentric Circles to Generate a Parabola
  • 28. Using Concentric Circles to Generate an Ellipse
  • 29. Using Concentric Circles to Generate a Hyperbola
  • 30. Summing a Series of Powers
  • 31. Sum of Limits
  • 32. Linear Equations With Two Variables
  • 33. Introducing Compound Interest Using the "Rule of 72”
  • 34. Generating Pythagorean Triples
  • 35. Finding Sums of Finite Series Geometry Ideas

Geometry Ideas

  • 1. Sum of the Measures of the Angles of a Triangle
  • 2. Introducing the Sum of the Measures of the Interior Angles of a Polygon
  • 3. Sum of the Measures of the Exterior Angles of a Polygon: I
  • 4. Sum of the Measures of the Exterior Angles of a Polygon: II
  • 5. Triangle Inequality
  • 6. Don’t Necessarily Trust Your Geometric Intuition
  • 7. Importance of Definitions in Mathematics (Geometry)
  • 8. Proving Quadrilaterals to Be Parallelograms
  • 9. Demonstrating the Need to Consider All Information Given
  • 10. Midlines of a Triangle
  • 11. Length of the Median of a Trapezoid
  • 12. Pythagorean Theorem
  • 13. Simple Proofs of the Pythagorean Theorem
  • 14. Angle Measurement With a Circle by Moving the Circle
  • 15. Angle Measurement With a Circle
  • 16. Introducing and Motivating the Measure of an Angle Formed by Two Chords
  • 17. Using the Property of the Opposite Angles of an Inscribed Quadrilateral
  • 18. Introducing the Concept of Slope
  • 19. Introducing Concurrency Through Paper Folding
  • 20. Introducing the Centroid of a Triangle
  • 21. Introducing the Centroid of a Triangle Via a Property
  • 22. Introducing Regular Polygons
  • 23. Introducing Pi
  • 24. The Lunes and the Triangle
  • 25. The Area of a Circle
  • 26. Comparing Areas of Similar Polygons
  • 27. Relating Circles
  • 28. Invariants in Geometry
  • 29. Dynamic Geometry to Find an Optimum Situation
  • 30. Construction-Restricted Circles
  • 31. Avoiding Mistakes in Geometric Proofs
  • 32. Systematic Order in Successive Geometric Moves: Patterns!
  • 33. Introducing the Construction of a Regular Pentagon
  • 34. Euclidean Constructions and the Parabola
  • 35. Euclidean Constructions and the Ellipse
  • 36. Euclidean Constructions and the Hyperbola
  • 37. Constructing Tangents to a Parabola From an External Point P
  • 38. Constructing Tangents to an Ellipse
  • 39. Constructing Tangents to a Hyperbola

Trigonometry Ideas

  • 1. Derivation of the Law of Sines: I
  • 2. Derivation of the Law of Sines: II
  • 3. Derivation of the Law of Sines: III
  • 4. A Simple Derivation for the Sine of the Sum of Two Angles
  • 5. Introductory Excursion to Enable an Alternate Approach to Trigonometry Relationships
  • 6. Using Ptolemy’s Theorem to Develop Trigonometric Identities for Sums and Differences of Angles
  • 7. Introducing the Law of Cosines: I (Using Ptolemy’s Theorem)
  • 8. Introducing the Law of Cosines: II
  • 9. Introducing the Law of Cosines: III
  • 10. Alternate Approach to Introducing Trigonometric Identities
  • 11. Converting to Sines and Cosines
  • 12. Using the Double Angle Formula for the Sine Function
  • 13. Making the Angle Sum Function Meaningful
  • 14. Responding to the Angle-Trisection Question

Probability and Statistics Ideas

  • 1. Introduction of a Sample Space
  • 2. Using Sample Spaces to Solve Tricky Probability Problems
  • 3. Introducing Probability Through Counting (or Probability as Relative Frequency)
  • 4. In Probability You Cannot Always Rely on Your Intuition
  • 5. When “Averages” Are Not Averages: Introducing Weighted Averages
  • 6. The Monty Hall Problem: “Let’s Make a Deal”
  • 7. Conditional Probability in Geometry
  • 8. Introducing the Pascal Triangle
  • 9. Comparing Means Algebraically
  • 10. Comparing Means Geometrically
  • 11. Gambling Can Be Deceptive

Other Topics Ideas

  • 1. Asking the Right Questions
  • 2. Making Arithmetic Means Meaningful
  • 3. Using Place Value to Strengthen Reasoning Ability
  • 4. Prime Numbers
  • 5. Introducing the Concept of Relativity
  • 6. Introduction to Number Theory
  • 7. Extracting a Square Root
  • 8. Introducing Indirect Proof
  • 9. Keeping Differentiation Meaningful
  • 10. Irrationality of the Square Root of an Integer That Is Not a Perfect Square
  • 11. Introduction to the Factorial Function x!
  • 12. Introduction to the Function x to the (n) Power
  • 13. Introduction to the Two Binomial Theorems
  • 14. Factorial Function Revisited
  • 15. Extension of the Factorial Function r! to the Case Where r Is Rational
  • 16. Prime Numbers Revisited
  • 17. Perfect Numbers

Additional materials

Description

Multiply math mastery and interest with these inspired teaching tactics!

Invigorate instruction and engage students with this treasure trove of "Great Ideas" compiled by two of the greatest minds in mathematics. From commonly taught topics in algebra, geometry, trigonometry, and statistics, to more advanced explorations into indirect proofs, binomial theorem, irrationality, relativity, and more, this guide outlines concepts and techniques that will inspire veteran and new educators alike.

This updated second edition offers more proven practices for bringing math concepts to life in the classroom, including:

  • 114 innovative strategies organized by subject area
  • User-friendly content identifying "objective," "materials," and "procedure" for each technique
  • A range of teaching models, including hands-on and computer-based methods
  • Specific and straightforward examples with step-by-step lessons

Written by two distinguished leaders in the field-mathematician, author, professor, university dean, and popular commentator Alfred S. Posamentier, along with mathematical pioneer and Nobel Prize recipient Herbert A. Hauptman-this guide brings a refreshing perspective to secondary math instruction to spark renewed interest and success among students and teachers.

Contents

Preface

Preface

Acknowledgments

Acknowledgments

About the Authors

About the Authors

Introductory Idea

  • Coming to Terms With Mathematical Terms

Algebra Ideas

  • 1. Introducing the Product of Two Negatives
  • 2. Multiplying Polynomials by Monomials (Introducing Algebra Tiles)
  • 3. Multiplying Binomials (Using Algebra Tiles)
  • 4. Factoring Trinomials (Using Algebra Tiles)
  • 5. Multiplying Binomials (Geometrically)
  • 6. Factoring Trinomials (Geometrically)
  • 7. Trinomial Factoring
  • 8. How Algebra Can Be Helpful
  • 9. Automatic Factoring of a Trinomial
  • 10. Reasoning Through Algebra
  • 11. Pattern Recognition Cautions
  • 12. Caution With Patterns
  • 13. Using a Parabola as a Calculator
  • 14. Introducing Literal Equations: Simple Algebra to Investigate an Arithmetic Phenomenon
  • 15. Introducing Nonpositive Integer Exponents
  • 16. Importance of Definitions in Mathematics (Algebra)
  • 17. Introduction to Functions
  • 18. When Algebra Explains Arithmetic
  • 19. Sum of an Arithmetic Progression
  • 20. Averaging Rates
  • 21. Using Triangular Numbers to Generate Interesting Relationships
  • 22. Introducing the Solution of Quadratic Equations Through Factoring
  • 23. Rationalizing the Denominator
  • 24. Paper Folding to Generate a Parabola
  • 25. Paper Folding to Generate an Ellipse
  • 26. Paper Folding to Generate a Hyperbola
  • 27. Using Concentric Circles to Generate a Parabola
  • 28. Using Concentric Circles to Generate an Ellipse
  • 29. Using Concentric Circles to Generate a Hyperbola
  • 30. Summing a Series of Powers
  • 31. Sum of Limits
  • 32. Linear Equations With Two Variables
  • 33. Introducing Compound Interest Using the "Rule of 72”
  • 34. Generating Pythagorean Triples
  • 35. Finding Sums of Finite Series Geometry Ideas

Geometry Ideas

  • 1. Sum of the Measures of the Angles of a Triangle
  • 2. Introducing the Sum of the Measures of the Interior Angles of a Polygon
  • 3. Sum of the Measures of the Exterior Angles of a Polygon: I
  • 4. Sum of the Measures of the Exterior Angles of a Polygon: II
  • 5. Triangle Inequality
  • 6. Don’t Necessarily Trust Your Geometric Intuition
  • 7. Importance of Definitions in Mathematics (Geometry)
  • 8. Proving Quadrilaterals to Be Parallelograms
  • 9. Demonstrating the Need to Consider All Information Given
  • 10. Midlines of a Triangle
  • 11. Length of the Median of a Trapezoid
  • 12. Pythagorean Theorem
  • 13. Simple Proofs of the Pythagorean Theorem
  • 14. Angle Measurement With a Circle by Moving the Circle
  • 15. Angle Measurement With a Circle
  • 16. Introducing and Motivating the Measure of an Angle Formed by Two Chords
  • 17. Using the Property of the Opposite Angles of an Inscribed Quadrilateral
  • 18. Introducing the Concept of Slope
  • 19. Introducing Concurrency Through Paper Folding
  • 20. Introducing the Centroid of a Triangle
  • 21. Introducing the Centroid of a Triangle Via a Property
  • 22. Introducing Regular Polygons
  • 23. Introducing Pi
  • 24. The Lunes and the Triangle
  • 25. The Area of a Circle
  • 26. Comparing Areas of Similar Polygons
  • 27. Relating Circles
  • 28. Invariants in Geometry
  • 29. Dynamic Geometry to Find an Optimum Situation
  • 30. Construction-Restricted Circles
  • 31. Avoiding Mistakes in Geometric Proofs
  • 32. Systematic Order in Successive Geometric Moves: Patterns!
  • 33. Introducing the Construction of a Regular Pentagon
  • 34. Euclidean Constructions and the Parabola
  • 35. Euclidean Constructions and the Ellipse
  • 36. Euclidean Constructions and the Hyperbola
  • 37. Constructing Tangents to a Parabola From an External Point P
  • 38. Constructing Tangents to an Ellipse
  • 39. Constructing Tangents to a Hyperbola

Trigonometry Ideas

  • 1. Derivation of the Law of Sines: I
  • 2. Derivation of the Law of Sines: II
  • 3. Derivation of the Law of Sines: III
  • 4. A Simple Derivation for the Sine of the Sum of Two Angles
  • 5. Introductory Excursion to Enable an Alternate Approach to Trigonometry Relationships
  • 6. Using Ptolemy’s Theorem to Develop Trigonometric Identities for Sums and Differences of Angles
  • 7. Introducing the Law of Cosines: I (Using Ptolemy’s Theorem)
  • 8. Introducing the Law of Cosines: II
  • 9. Introducing the Law of Cosines: III
  • 10. Alternate Approach to Introducing Trigonometric Identities
  • 11. Converting to Sines and Cosines
  • 12. Using the Double Angle Formula for the Sine Function
  • 13. Making the Angle Sum Function Meaningful
  • 14. Responding to the Angle-Trisection Question

Probability and Statistics Ideas

  • 1. Introduction of a Sample Space
  • 2. Using Sample Spaces to Solve Tricky Probability Problems
  • 3. Introducing Probability Through Counting (or Probability as Relative Frequency)
  • 4. In Probability You Cannot Always Rely on Your Intuition
  • 5. When “Averages” Are Not Averages: Introducing Weighted Averages
  • 6. The Monty Hall Problem: “Let’s Make a Deal”
  • 7. Conditional Probability in Geometry
  • 8. Introducing the Pascal Triangle
  • 9. Comparing Means Algebraically
  • 10. Comparing Means Geometrically
  • 11. Gambling Can Be Deceptive

Other Topics Ideas

  • 1. Asking the Right Questions
  • 2. Making Arithmetic Means Meaningful
  • 3. Using Place Value to Strengthen Reasoning Ability
  • 4. Prime Numbers
  • 5. Introducing the Concept of Relativity
  • 6. Introduction to Number Theory
  • 7. Extracting a Square Root
  • 8. Introducing Indirect Proof
  • 9. Keeping Differentiation Meaningful
  • 10. Irrationality of the Square Root of an Integer That Is Not a Perfect Square
  • 11. Introduction to the Factorial Function x!
  • 12. Introduction to the Function x to the (n) Power
  • 13. Introduction to the Two Binomial Theorems
  • 14. Factorial Function Revisited
  • 15. Extension of the Factorial Function r! to the Case Where r Is Rational
  • 16. Prime Numbers Revisited
  • 17. Perfect Numbers

Additional materials

SAGE Publishing Logo

101+ Great Ideas for Introducing Key Concepts in Mathematics

A Resource for Secondary School Teachers


May 2006 | 296 pages | Corwin

Format Published Date ISBN Price
Hardcover 27/02/2023 9781412927055 $95.95
Paperback 27/02/2023 9781412927062 $43.95

Multiply math mastery and interest with these inspired teaching tactics!

Invigorate instruction and engage students with this treasure trove of "Great Ideas" compiled by two of the greatest minds in mathematics. From commonly taught topics in algebra, geometry, trigonometry, and statistics, to more advanced explorations into indirect proofs, binomial theorem, irrationality, relativity, and more, this guide outlines concepts and techniques that will inspire veteran and new educators alike.

This updated second edition offers more proven practices for bringing math concepts to life in the classroom, including:

  • 114 innovative strategies organized by subject area
  • User-friendly content identifying "objective," "materials," and "procedure" for each technique
  • A range of teaching models, including hands-on and computer-based methods
  • Specific and straightforward examples with step-by-step lessons

Written by two distinguished leaders in the field-mathematician, author, professor, university dean, and popular commentator Alfred S. Posamentier, along with mathematical pioneer and Nobel Prize recipient Herbert A. Hauptman-this guide brings a refreshing perspective to secondary math instruction to spark renewed interest and success among students and teachers.


Table Of Contents:

  • Preface
  • Acknowledgments
  • About the Authors
  • Introductory Idea
  • Coming to Terms With Mathematical Terms
  • Algebra Ideas
  • 1. Introducing the Product of Two Negatives
  • 2. Multiplying Polynomials by Monomials (Introducing Algebra Tiles)
  • 3. Multiplying Binomials (Using Algebra Tiles)
  • 4. Factoring Trinomials (Using Algebra Tiles)
  • 5. Multiplying Binomials (Geometrically)
  • 6. Factoring Trinomials (Geometrically)
  • 7. Trinomial Factoring
  • 8. How Algebra Can Be Helpful
  • 9. Automatic Factoring of a Trinomial
  • 10. Reasoning Through Algebra
  • 11. Pattern Recognition Cautions
  • 12. Caution With Patterns
  • 13. Using a Parabola as a Calculator
  • 14. Introducing Literal Equations: Simple Algebra to Investigate an Arithmetic Phenomenon
  • 15. Introducing Nonpositive Integer Exponents
  • 16. Importance of Definitions in Mathematics (Algebra)
  • 17. Introduction to Functions
  • 18. When Algebra Explains Arithmetic
  • 19. Sum of an Arithmetic Progression
  • 20. Averaging Rates
  • 21. Using Triangular Numbers to Generate Interesting Relationships
  • 22. Introducing the Solution of Quadratic Equations Through Factoring
  • 23. Rationalizing the Denominator
  • 24. Paper Folding to Generate a Parabola
  • 25. Paper Folding to Generate an Ellipse
  • 26. Paper Folding to Generate a Hyperbola
  • 27. Using Concentric Circles to Generate a Parabola
  • 28. Using Concentric Circles to Generate an Ellipse
  • 29. Using Concentric Circles to Generate a Hyperbola
  • 30. Summing a Series of Powers
  • 31. Sum of Limits
  • 32. Linear Equations With Two Variables
  • 33. Introducing Compound Interest Using the "Rule of 72”
  • 34. Generating Pythagorean Triples
  • 35. Finding Sums of Finite Series Geometry Ideas
  • Geometry Ideas
  • 1. Sum of the Measures of the Angles of a Triangle
  • 2. Introducing the Sum of the Measures of the Interior Angles of a Polygon
  • 3. Sum of the Measures of the Exterior Angles of a Polygon: I
  • 4. Sum of the Measures of the Exterior Angles of a Polygon: II
  • 5. Triangle Inequality
  • 6. Don’t Necessarily Trust Your Geometric Intuition
  • 7. Importance of Definitions in Mathematics (Geometry)
  • 8. Proving Quadrilaterals to Be Parallelograms
  • 9. Demonstrating the Need to Consider All Information Given
  • 10. Midlines of a Triangle
  • 11. Length of the Median of a Trapezoid
  • 12. Pythagorean Theorem
  • 13. Simple Proofs of the Pythagorean Theorem
  • 14. Angle Measurement With a Circle by Moving the Circle
  • 15. Angle Measurement With a Circle
  • 16. Introducing and Motivating the Measure of an Angle Formed by Two Chords
  • 17. Using the Property of the Opposite Angles of an Inscribed Quadrilateral
  • 18. Introducing the Concept of Slope
  • 19. Introducing Concurrency Through Paper Folding
  • 20. Introducing the Centroid of a Triangle
  • 21. Introducing the Centroid of a Triangle Via a Property
  • 22. Introducing Regular Polygons
  • 23. Introducing Pi
  • 24. The Lunes and the Triangle
  • 25. The Area of a Circle
  • 26. Comparing Areas of Similar Polygons
  • 27. Relating Circles
  • 28. Invariants in Geometry
  • 29. Dynamic Geometry to Find an Optimum Situation
  • 30. Construction-Restricted Circles
  • 31. Avoiding Mistakes in Geometric Proofs
  • 32. Systematic Order in Successive Geometric Moves: Patterns!
  • 33. Introducing the Construction of a Regular Pentagon
  • 34. Euclidean Constructions and the Parabola
  • 35. Euclidean Constructions and the Ellipse
  • 36. Euclidean Constructions and the Hyperbola
  • 37. Constructing Tangents to a Parabola From an External Point P
  • 38. Constructing Tangents to an Ellipse
  • 39. Constructing Tangents to a Hyperbola
  • Trigonometry Ideas
  • 1. Derivation of the Law of Sines: I
  • 2. Derivation of the Law of Sines: II
  • 3. Derivation of the Law of Sines: III
  • 4. A Simple Derivation for the Sine of the Sum of Two Angles
  • 5. Introductory Excursion to Enable an Alternate Approach to Trigonometry Relationships
  • 6. Using Ptolemy’s Theorem to Develop Trigonometric Identities for Sums and Differences of Angles
  • 7. Introducing the Law of Cosines: I (Using Ptolemy’s Theorem)
  • 8. Introducing the Law of Cosines: II
  • 9. Introducing the Law of Cosines: III
  • 10. Alternate Approach to Introducing Trigonometric Identities
  • 11. Converting to Sines and Cosines
  • 12. Using the Double Angle Formula for the Sine Function
  • 13. Making the Angle Sum Function Meaningful
  • 14. Responding to the Angle-Trisection Question
  • Probability and Statistics Ideas
  • 1. Introduction of a Sample Space
  • 2. Using Sample Spaces to Solve Tricky Probability Problems
  • 3. Introducing Probability Through Counting (or Probability as Relative Frequency)
  • 4. In Probability You Cannot Always Rely on Your Intuition
  • 5. When “Averages” Are Not Averages: Introducing Weighted Averages
  • 6. The Monty Hall Problem: “Let’s Make a Deal”
  • 7. Conditional Probability in Geometry
  • 8. Introducing the Pascal Triangle
  • 9. Comparing Means Algebraically
  • 10. Comparing Means Geometrically
  • 11. Gambling Can Be Deceptive
  • Other Topics Ideas
  • 1. Asking the Right Questions
  • 2. Making Arithmetic Means Meaningful
  • 3. Using Place Value to Strengthen Reasoning Ability
  • 4. Prime Numbers
  • 5. Introducing the Concept of Relativity
  • 6. Introduction to Number Theory
  • 7. Extracting a Square Root
  • 8. Introducing Indirect Proof
  • 9. Keeping Differentiation Meaningful
  • 10. Irrationality of the Square Root of an Integer That Is Not a Perfect Square
  • 11. Introduction to the Factorial Function x!
  • 12. Introduction to the Function x to the (n) Power
  • 13. Introduction to the Two Binomial Theorems
  • 14. Factorial Function Revisited
  • 15. Extension of the Factorial Function r! to the Case Where r Is Rational
  • 16. Prime Numbers Revisited
  • 17. Perfect Numbers

Recent Product Reviews:

"A 'must' for any who wish for more proven classroom practices. From geometry to algebra, teachers will find it packed with ideas."
California Bookwatch, September 2006
Praise for the First Edition: "Written to appeal to all mathematics teachers. Teachers who are struggling with introducing these topical ideas will find the book is written in such a way as to facilitate their understanding of the topics. The language is easy to understand and the book is very user friendly. In addition, those teachers who have a sound grasp of these key concepts can find fresh ideas for teaching old concepts presented in a manner that is intellectual in design.”
Journal of School Improvement, Volume 3, Issue 2, Fall 2002

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