Recent Articles and Related materials

Full text of articles in issues back to 2004 may be accessed in the Centroid Issue Archive. Need assistance? Contact Holly Hirst, Editor, hirsthp@appstate.edu

Volume 50

• No. 2  Spring 2025
• No. 1  Fall 2024
  • Holly Hirst. The Old Man and the Tree: A Real Application of Trigonometry. pp 5-8.
  • F. Paul Wonsavage, Zandra de Araujo, Amber G. Candela, & Samuel Otten. Mining Gems to Inspire Teacher Reflection. pp. 9-12.

Volume 49

• No. 2  Spring 2024
  • Montana Smithey & Lauren Akers Oglesby. Connecting Mathematics to Students' Funds of Knowledge: Illustrations from the Elementary Classroom. pp. 3-9.
  • Alesia Mickle Moldavan & Montana Smithey. Problem Solving through a Social Justice Lens. pp. 10-15.
• No. 1  Fall 2023
  • Aaron Trocki & Erika Hernandez. Mirrors and Windows to Analyze Waste Production: A Fifth-grade Teacher Promotes Equitable Learning with Applying Fractions. pp 3-10.
  • Kayla Chandler & Cary Davis. The Dream Car Project: An Example of a Personalized Real-World Mathematics Task. pp. 11-18.

Volume 48

• No. 2  Spring 2023
  • Mara Moye, Renea Baker, Anita Koen, & Charity Cayton. Reflections on Co-teaching with Interns in High School. pp. 4-8.
  • Ashley Whitehead. Off the Beaten Path: Estimation in a 3rd Grade Classroom. pp. 10-13.
  • Rebecca Joy Martin Philyaw.  A Math III Teacher's Story. pp. 14-15.
• No. 1  Fall 2022
  • Solomon Willis. Fun with Measurements.  pp. 3-7.
  • Gail Kaplan. Playing with Blocks.  pp. 8-12.
  • Gregory K. Harrell. Problem Solving Using a Balance Scale. pp. 13-18.

Volume 47

• No. 2  Spring 2022
  • Rebecca E. Ferer & Keary Howard. Geometry: Prove It! – An Interactive WebQuest. pp. 3-9.  Webquest File [MSword] [PDF]
  • Charity Cayton & Maureen Grady. Call for Submissions: Centroid Special Issue on Co-Teaching. p. 10.
  • Laurie O. Cavey, Hollylynne S. Lee, & Maria Hernandez. Online Tools to Support Mathematical Modeling and Community Building. pp. 11-17.
• No. 1  Fall 2021
  • Holly Hirst. Using Leslie Models Built from Scientific Data to Illustrate Matrix Arithmetic.  pp. 3-6.
  • Savannah Phillips & Monica Gonzalez. Zooming Through Virtual Numbers: Considerations for Virtual Instruction.  pp. 7-11.
  • Ann H. Wallace & Maria Zehr. Games A-'Round' the Classroom: Supporting Rounding Strategies in Third Grade. pp. 13-19.

Volume 46

• No. 2   Spring 2021
  • Cacey Wells. Mathematics as a Metaphor. pp. 3-7
  • Gail Kaplan. The Circle Game. pp. 9-13.
  • Winn Crenshaw Wheeler, Jessica Ivy, & Amy Cordrey. Building Conceptual Understanding in the Age of Virtual Learning. pp. 14-18.
• No. 1   Fall 2020
  • Ann Wheeler & Diana De Santiago. Santa to the Rescue: Exploring the Use of Slope and the Pythagorean Theorem. pp. 5-8.
  • Betty B. Long & Deborah A. Crocker. A Visual Proof of the Pythagorean Theorem. pp 9-11.
  • Alan T. Arnholt & Suzanne R. Arnholt. Using RStudio Cloud with a High School Class. pp. 13-17.

Volume 45

• No. 2   Spring 2020
  • R. Michael Krach & Todd O. Moyer. Coordinates & Geometric Transformations: Four Activities. pp. 3-10.
  • Monica Gonzolez & Carrie Lee. Eliciting to Understand Unfamiliar Student Strategies. pp 9-13.
• No. 1   Fall 2019
  • Solomon Willis. Modeling Bridges with Quadratic Equations. pp. 3-7.
  • Faye Bruun. Connecting Mathematicians to Middle School Students Through Literature. pp 9-13.
  • Jamie Munn. Let's Roll with Spiro! pp. 17-18.

Volume 44

• No. 2 Spring 2019
  • Axelle Faughn. Discovering Students Mathematical World Through Mathematical Selfies. pp. 3-9.
  • Gail Kaplan. Fish Tanks and Beans: Related by Calculus! pp. 11-14.
• No. 1   Fall 2018
  • Samantha Everett & Ross Gosky.  Bayesian Reasoning in a High School Statistics Course. pp. 3-7.
  • Patricia Marie Barrier & Holly Peters Hirst.  Tessellations: Tiling the Plane. pp. 9-14.
  • Sharareh Nikbakht. ASU Math Walk: Promoting STEM using Creative Activities. p. 15-20.

Volume 43

• No. 2 Spring 2018
  • Bryant Ford. Professional Learning Communities RULE. pp. 3-6.
  • Alan Arnholt. Using R Markdown with the RStudio Integrated Development Editor. pp. 7-10.
• No. 1   Fall 2017
  • Maureen Grady, Rose Sinicrope, Ronald V. Preston, Charity Cayton, Catherine Schwartz, Kwaku Adu-Gyamfi, Catharina Middleton, & D. Brooke Hill.  Literate Mathematics Educator's Quiz: Updated for a New Century. pp. 3-6.
  • Nathan Borchelt, Axell Faugn, Kathy Jaqua, & Sloan Despeaux.  Math Teachers' Circles: A Catalyst for Professional Growth. pp. 7-11.
  • Heather South & Ralph Willis. Math Contest Papers Accepted at the State Archives. p. 12.

Volume 42

• No. 2  Spring 2017
  • Holly Henderson Pinter. Formative Assessment Utilizing the TI-Nspire Navigator System in 7th Grade Classrooms. pp. 3-6.
  • Diana S. Cheng, Asli Sezen-Barrie, Alexander C. Barrie, Timothy A. Akers, Kevin Peters. Forces in the Pairs Death Spiral: A Mathematics and Physics Modeling Activity. pp. 7-12.
  • William C. Bauldry. Dr. Leibniz and His Amazing Triangle. pp. 13-16.
  • Cheng et al. Worksheet Solutions
• No. 1   Fall 2016
  • Amber Mellon.  Using Financial Literacy to Teach Math Concepts. pp. 5-9.
  • Amy Whicker. Flipped Mathematics Classrooms for the Inflexible. pp. 11-14.
  • Diana L. Moss, Stephanie Vega, & Teruni Lamberg.  Using Linking Cubes to Understand Prime Factorization. pp. 17-18.
  • Mellon Worksheet Solutions

Volume 41

• No. 2   Spring 2016   
  • Courtney Glavich. Third Time's the Charm: Three Effective Strategies for Teaching. pp. 3-7.
  • David Thompson. Using a Thermometer to Catch a Cold-blooded Killer. pp. 9-11.
  • Todd Abel, Alana Baird, Holly Hirst, & Tracie Salinas. Introducing Students to the Mathematical Modeling Process. pp. 13-16.
  • Donald Hooley. Distributive Property Illustrations from Vedic Mathematics. pp. 19-22.
• No. 1   Fall 2015
  • Alfinio Flores.  Minimizing the Sum of the Squares of the Distances to the Vertices of a Triangle. pp. 7-11.
  • Samuel Luke Tunstall. Lying with Statistics: Promoting Numeracy with an Exciting Project. pp. 12-14.
  • Katie Martin.  Discovery Education's Math Techbook in the Middle School Classroom. pp. 17-18.
  • Abel et al. Modeling Activity Assessment Diagram

Volume 40

• No. 2   Spring 2015
  • William Bauldry & Matthew Jobrack. How Two becomes One: A Recurrence and a Trig Identity. pp. 3-5.
  • Holly Peters Hirst. The Racing Game - A Probability Activity. pp. 6-9.
• No. 1   Fall 2014
  • Tina Lupton, Sarah Pratt, & Kerri Richardson. Exploring Long Division Through Division Quilts. pp. 3-8.
  • Donald Hooley. Vedic Arithmetic for Algorthmic Enrichment. pp. 9-12.

Volume 39

• No. 3   Spring 2014
  • Shirley A. Disseler & Allison Thomson. Gender Differences in Attitudes and Percetions of Middle Grades Mathematics Students. pp. 5-9.
  • Lauren DuVall & Jessie Davidson.  Descartes' Coordinate Geometry and Pick's Theorem. pp. 10-12.
• No. 2   Fall 2013  
  • Alfinio Flores. Visualizing the States. pp. 7-9.
  • Sarah Swartzel & John Wagaman. A Tactile Learning Group Activity for Visualization of Function Transformations in Algebra. pp. 10-15.
  • April Coggins. Flatten the Middle Math. pp. 16-17.
  • Puzzle Solutions
• No. 1   Spring 2013
  • Allison McCullock, Jeremy Ernst, Christopher Limer, & Sara Taormina. STEM Inquiry on the Neuse River. pp. 6-10.
  • James Munn. iMath II. pp. 11-15.
  • Tammy Applegate. Setting up a School Store. pp. 16-17.
  • Crystal Morton, Daniella Cook, & Jan Yow. It's Play Time: Enhancing Computational Skills and Strategy Development Through Mathematical Games. pp. 18-21.

Volume 38

• No. 2   Fall 2012   
  • Peter Eley & Lee Stiff.  A Tale about Access to 8th Grade Algebra in North Carolina. pp. 7-10.
  • Amanda Fields. iPods and Flip Video in the Classroom. pp. 11-12.
  • Rachel Hubbard. Clicking Toward Success. pp. 13-14.
  • Puzzle Solutions
• No. 1   Spring 2012
  •  Holly Peters Hirst. Functions as Graphs: Depth Versus Volume in a Vase. pp. 5-7.
  • Gregory D. Foley.  The Shape of an Ellipse. pp.8-13.
  • Deborah Crocker. An Interview with Author Joan Holub. pp. 14-15.
  • Puzzle Solutions

Volume 37

• No. 2   Fall 2011   
  • John Malokach.  The π Project.  pp. 6-8.
  • Peter Eley & Kelly Hines. Students Tell the Story: Creative Mathematics Storytelling Using Narrative Software. pp. 9-13.
  • Jenny Murray. Math Night at Voyager Academy. p. 18.
  • Puzzle Solutions
• No. 1   Spring 2011   
  • Ann D. Bingham.  Learning Styles of the Struggling Algebra Student: A Statistical Snapshot. pp. 5-8.
  • Tyrette S. Carter & Loury Ollison Floyd. Twenty Ways to Enhance All Students' Mathematical Understanding.  pp. 10-13.
  • Nancy Bell Ruppert.  Using Visual Images to Enhance Comprehension. pp. 14-16.
  • Puzzle Solutions

Volume 36

• No. 2   Fall 2010   
  • Holt Wilson, Hollylynne Lee, & Karen Hollebrands.  An Alternative Development of Measures of Center and Spread. pp. 6-11.
  • Karen Perry.  Graduate School: A Journey to be Remembered. pp. 12-13.
  • Donna Trick.  Milky Way Math.  pp. 14-15.
  • Tracie McLemore Salinas & LaDonna Brown.  A Wrong Assessment that was Somehow Just Right.  p. 16.
  • Puzzle Solutions
• No. 1   Spring 2010   
  • Harold Reiter.  Julia Robinson Mathematics Festivals. pp. 5-6.
  • Carla Rodden.  The Wheels on the Bus. . .A Motivator for Learning About Apportionment.  pp. 7-12.
  • Puzzle Solutions

Volume 35

• No. 2   Fall 2009   
  • April S. Collins. Hands-on Equations. p. 6.
  • Catherine Stein & Kerri Richardson. Using Spatial Reasoning to Enhance k-2 Number Sense. pp. 7-9.
  • Pamela R. Moses-Snipes. Mathematics Leadership Academy: Promoting Students' Awareness About Applications of Mathematics. pp. 10-14.
  • Puzzle Solutions
• No. 1   Spring 2009   
  • Tracy Goodson-Espy. Opportunities to Engage Students in Problem-Solving: A North Carolina Connection to the Math Forum?s Problem of the Week Program. pp. 5-11.
  • Tom Tilton. High School Activity: Is This the One? p. 12.
  • Kimberly Wagner.  Teaching Subtraction of Fractions with Regrouping. pp. 13-15.
  • Tilton Worksheet

Volume 34

• No. 2   Fall 2008
  • Vincent Snipes, Judith Reed, & Patricia Valdez. Addressing Equity Issues at Multiple Levels: Facilitating Equity in Mathematics Education. pp. 7-9.
  • Ashley Cullipher. Music in Mathematics. pp. 10-12.
  • Greg Harrell. Reminiscing, Problem Posing, and Problem Solving with Magic Cards. pp. 13-16.
  • Sarah Greenwald. Evelyn Boyd Granville: Complex Solutions to Real-Life Problems. pp. 17-21.
• No. 1   Spring 2008
  • William C. Bauldry. Completing the Square Historically. pp. 5-8.
  • Rebecca S. Wills. The River Project. pp. 9-10.
  • Nancy Ruppert. Game Day. p. 11.
  • Solomon Willis. Complex Number Puzzles. p. 12.
  • Kimberly Smith Burton, Kimberly Young, & Stephanie Duncan. Discovering the Area of a Regular Polygon. pp. 13-16.

Volume 33

• No. 2   Fall 2007
  • Susan Jones & Sumer Lerch.  Teaching with Technology - Two Teachers' Experiences. pp. 5-10.
  • Holly Peters Hirst. Sudoku - Serious Math? Yes! pp. 11-12.
  • Shelby Morge & Kathleen Lynch-Davis. AEP and the EOGs in North Carolina: What do These Assessments Reveal About Fourth- and Eighth-grade Students? Mathematical Achievement? pp. 21-25
• No. 1   Spring 2007
  • Alfinio Flores. Algebra for a Princess. pp. 5-8.
  • Chris Moore. Cycles of Learning: A Constructivist Approach to Planning for inquiry-Based Differentiated Instruction. pp. 11-14.

Volume 32

• No. 2   Fall 2006
  • Dan Schellenberg & Bill Bauldry. Mathematicians, Birthdays, Calendars, and a Student Project. p. 6.
  • John Staley, Patricia S. Moyer, & Donna R. Sterling. A Penny's Worth of Principles and Standards Using Scientific Notation. pp. 7-15.
  • Sarah J. Greenwald & Jill E. Thomley. Putting the Model in Mathematician Role Models. pp. 20-22.
• No. 1   Spring 2006
  • Donna Godley. Ownership of Students? Ideas. pp. 7-10.
  • Natasha L. Mabe. Ideas on Advanced Functions and Modeling. pp. 11-14.
  • Lee V. Stiff & Lee Creighton. Adding and Subtracting Fractions: Is it How Much or How Many? pp. 15-19.
  • Patricia Carstensen, Bethany Hudnutt, & Kent Robertson. The Mathematics of Tipping Points. pp. 20-23.
  • Sarah J. Greenwald, Vicky Klima, & Katie Mawhinney. Marjorie Lee Browne: North Carolina Educator. pp. 28-32.

Volume 31

• No. 2   Fall 2005
  • Cos D. Fi. Bite Sized Mathematics: The Case of the Radical. pp. 7-9.
  • Carrie S. Cutler. Knowing When to Which: Addressing the Calculator Quandary. pp. 10-12.
  • David K. Pugalee, Ian Brailsford, & Theresa Perez. Strategies to Support Mathematical Understanding of LEP Students. pp. 13-16.
• No. 1   Spring 2005
  • Karan B. Smith. What do Dogs, Cats, Fire Hydrants, and Princesses Have to do With Geometry? pp. 7-10.
  • Jeffry L. Hirst & W. Hutch Sprunt. Venn Diagrams and Reasoning. pp. 11-16.

Volume 30

• No. 2   Fall 2004
  • Leslie Ann Perry. Mathematics: How Sweet it is. pp. 5-7.
  • Jill T. Richie & Sarah J. Greenwald. Florence Nightingale, the Passionate Statistician. pp. 13-21.
  • Harold Reiter. Closed-Form, Recursion, and Mind-Reading: Defining Sequences by Various Means. pp. 23-25.
  • Laura Davis. Discovering Mathematics. pp. 31-35.
• No. 1   Spring 2004
  • Lisa J. Embree. Charlotte’s Web and the County Fair: Learning about Making Change and the Value of Money. pp. 13-14.
  • Sarah J. Greenwald, Amy Ksir, & Lawrence H. Shirley. Thomas Fuller and his Calculation Ability. pp. 15-19

Volume 29

• No. 2   Fall 2003
  • Laura Brader-Araje. Q-Tips, Spit Balls, and Unknown Creatures: Learning from our Students. pp. 8-9.
  • Sarah J. Greenwald & Mark C. Ginn. David Blackwell and Game Theory. pp. 12-18.
  • Nancy L. Hetrick & Gerald W. Saxe. The Human Side of Mathematics: Do Our Students Ever Get a Chance to See it? pp. 19-21
• No. 1   Spring 2003
  • Gregory D. Foley & Deborah A. Crocker. The Words of Mathematics. pp. 8-10.
  • David E. Kullman. Stories about Story Problems. pp. 10-14.
  • William C. Bauldry. Cryptography in the Classroom. pp. 15-18

  • Sarah J. Greenwald & Edith Prentice Mendez. Hypatia, the First Known Woman Mathematician. pp. 19-24.