2

Flatland: The Power of Story in Mathematics
Jeffrey Travis, Seth Caplan and Dano Johnson
Grade Band Audience: General Interest/All Audiences
Hall F (Convention Center)

6

Building Geometric Understanding with the Buildings of Frank Lloyd Wright
Mary Wiltjer
Grade Band Audience: General Interest/All Audiences
Marriott Ballroom 6 (Marriott Downtown)

21

Geometry as a Vehicle, Not a Destination
Stephanie Whitney and Josea Eggink
Grade Band Audience: 6 to 8
109/110 (Convention Center)

33

Promoting Reasoning and Sense Making through 3-D Geometry Explorations
Sharon McCrone and James King
Grade Band Audience: 9 to 12
103/104 (Convention Center)

37

Folding, Cutting, Creating: How Geometry Shapes Up
Amy C. Mayfield and Lisa K. Rogers
Grade Band Audience: PreK to 2
203/204 (Convention Center)

38

Geometry in the Primary School Classroom
Kim P. Bowen
Grade Band Audience: PreK to 2
Grand Ballroom IX (JW Marriott)

41

Exploring Pattern Blocks: Developing Young Children’s Geometric Reasoning
Christina E. Sales
Grade Band Audience: PreK to 2, Preservice and Inservice
Marriott Ballroom 7/8 (Marriott Downtown)

42

Piquing Children's Interest in Geometry with Pentominoes
Jeremy J. Winters, Pam Neal and Marrie Lasater
Grade Band Audience: 3 to 5, PreK to 2
Grand Ballroom II (JW Marriott)

43

Reflecting the Beauty of Symmetry: Viewing Math in a Kaleidoscope
Donna J. Toll and Nancy A. Kitt
Grade Band Audience: 3 to 5
121/122 (Convention Center)

47

Formulas, Formulas Everywhere! What Do They Mean?
Teresa G. Banker and Linda B. Crawford
Grade Band Audience: 6 to 8, 3 to 5
Wabash Ballroom 2 (Convention Center)

48

Rock with Scissors and Paper
Sara Normington
Grade Band Audience: 6 to 8, 3 to 5
Sagamore Ballroom 1 (Convention Center)

51

Exploring Triangle Congruence: A Rich, Discourse-Centered Geometry Task
Michelle Cirillo and Beth Herbel-Eisenmann
Grade Band Audience: 9 to 12, 6 to 8
126/127 (Convention Center)

52

From Comic Strips to String and Straws: Enhancing Spatial Skills
Rebecca R. Robichaux
Grade Band Audience: 9 to 12, 6 to 8
101/102 (Convention Center)

58

Want to Play Geometry?
Matthew Kaufmann
Grade Band Audience: 9 to 12
103/104 (JW Marriott)

59

Teach Mathematics through Music
Mark Jaffee
Grade Band Audience: Preservice and Inservice, 9 to 12
Sagamore Ballroom 7 (Convention Center)

62

Do You See What I See? 3-D Reasoning, 2-D Students
Peg Cagle
Grade Band Audience: General Interest/All Audiences
500 Ballroom (Convention Center)

63

Geometry’s Future: Past, Present, and Future
Carl W. Lee
Grade Band Audience: General Interest/All Audiences
Sagamore Ballroom 4 (Convention Center)

76

Through the Looking Glass: A Cultural Odyssey to Geometric Thinking
Cheryl Adeyemi and Shelly Jones
Grade Band Audience: 3 to 5, 6 to 8
141/142 (Convention Center)

78

Tools for Building Conceptual Understanding in Geometry
Genni Steele and Lu Ann Weynand
Grade Band Audience: 6 to 8
103/104 (Convention Center)

83

Using Formative Assessment to Differentiate Instruction in Geometry and Algebra
Caryl K. Pierson and Stephen Harris
Grade Band Audience: 9 to 12, 6 to 8
Grand Ballroom X (JW Marriott)

85

Infinity in Focus with The Geometer's Sketchpad®
Daniel Scher
Grade Band Audience: 9 to 12
Marriott Ballroom 6 (Marriott Downtown)

88

What Could Teachers Do When Students Propose Changing a Diagram?
Gloriana González
Grade Band Audience: 9 to 12
120 (Convention Center)

95

Integrating Geometry with Children's Literature and Art
Sallie Harper and Kimberly Triplett
Grade Band Audience: PreK to 2
105/106 (Convention Center)

97

Rhythm and Hues: Teaching and Learning with the SMART Board™
Christine Ruda
Grade Band Audience: 3 to 5, PreK to 2
Sagamore Ballroom 5 (Convention Center)

100

Modular Arithmetic: The Geometry of Remainders
Ginalouise Pflanz and Anna M. LaForgia
Grade Band Audience: 3 to 5
White River Ballroom A/B (JW Marriott)

102

3-D Geometry: New Ways to Transform Your Teaching
Aniceta Skowron
Grade Band Audience: 6 to 8, 3 to 5
White River Ballroom E (JW Marriott)

103

GEOrganize Your Thinking
Deborah A. Turner and Karen M. Moore
Grade Band Audience: 3 to 5, 6 to 8
Sagamore Ballroom 1 (Convention Center)

108

Stretching, Shrinking, and Similarity: Exploring Dilations in the Middle Grades
Terry Goodman, Ann McCoy and Sue Sundberg
Grade Band Audience: 6 to 8
144/145 (Convention Center)

111

Discrete Math and Geometry: Connected More than You Think
Donald T. Porzio
Grade Band Audience: 9 to 12
205/206 (Convention Center)

114

Transforming Quadrilaterals and Their Changing Diagonals
Charlene Keen
Grade Band Audience: 9 to 12
White River Ballroom I/J (JW Marriott)

116

Moving a Wall: An Unbelievable Lesson about Measuring Unimaginable Distances
Adam R. Poetzel, Joseph Muskin and Matthew C. Hopkins
Grade Band Audience: Preservice and Inservice, 9 to 12
Grand Ballroom IX (JW Marriott)

118

314 Days until Pi Day!
David K. Masunaga
Grade Band Audience: General Interest/All Audiences
Grand Ballroom V (JW Marriott)

129

Geometric Detectives
Shannon Sauder
Grade Band Audience: PreK to 2, 3 to 5
107/108 (Convention Center)

133

Who's Bigger, Sponge Bob or Jason Kidd?
William Jackson
Grade Band Audience: 3 to 5
Wabash Ballroom 3 (Convention Center)

134

Exploring the Beauty of Geometry through Art and Hands-On Activities
Mi Yeon Lee and Enrique Galindo
Grade Band Audience: 6 to 8, 3 to 5
123 (Convention Center)

135

Spatial Reasoning through Problem Solving: Connections across Mathematics
Bob Drake
Grade Band Audience: 6 to 8, 3 to 5
201/202 (Convention Center)

142

Geometric Wonders: How Lesson Study Brings Them to Life
José Francisco Sala García
Grade Band Audience: 9 to 12, 6 to 8
Wabash Ballroom 1 (Convention Center)

146

Geometric Optimization
Sarah Sword
Grade Band Audience: 9 to 12
Sagamore Ballroom 4 (Convention Center)

149

Taking Advantage of Technology and Connections to Construct Multiple Proofs
Zhonghong Jiang
Grade Band Audience: Preservice and Inservice, 9 to 12
120 (Convention Center)

150

Solving Problems Using GeoGebra: Classroom Teachers’ Experiences
Frackson Mumba, Lingguo Bu and Mary Wright
Grade Band Audience: Preservice and Inservice
141/142 (Convention Center)

156

The Three Pig Builders Put Geometry in Action
E. Todd Brown, Lana B. Thomas and Gina Kimmery
Grade Band Audience: Preservice and Inservice, PreK to 2
120 (Convention Center)

157

Geometry and Early Algebra: Attributes, Function Machines, and Sorting
Kate Sorgi and Tracy Manousaridis
Grade Band Audience: PreK to 2, 3 to 5
Wabash Ballroom 3 (Convention Center)

162

Geometry Gone Wild!
Catherine Kuhns
Grade Band Audience: 3 to 5
107/108 (Convention Center)

163

Beyond the Geometry: Discovering How Geometric Thinking Develops
Nell W. McAnelly
Grade Band Audience: Preservice and Inservice, 3 to 5
207 (Convention Center)

171

Slope and Tangent: It's a Geometric Connection!
Cheryl J. Tucker and Roy B. Dean
Grade Band Audience: 9 to 12, 6 to 8
Grand Ballroom VIII (JW Marriott)

172

Geometry: The Ultimate for Reasoning, Sense Making and Connecting
Vena M. Long
Grade Band Audience: 6 to 8
Sagamore Ballroom 4 (Convention Center)

173

Using Screen-Capture Movies to Assess Quadrilateral Constructions in Sketchpad
Annie Fetter and Christina Foran
Grade Band Audience: 9 to 12, 6 to 8
Wabash Ballroom 1 (Convention Center)

175

Close Encounters of the Third Dimension: Learning through Investigation
George McDermott
Grade Band Audience: 9 to 12
500 Ballroom (Convention Center)

178

3-D Modeling with Google™ SketchUp™
Mark A. Augustyn and Kathryn G. Shafer
Grade Band Audience: Preservice and Inservice, 9 to 12
201/202 (Convention Center)

179

Geometry Software Showdown: The Geometer’s Sketchpad® versus GeoGebra
Jeffrey S. Hall
Grade Band Audience: Preservice and Inservice, 9 to 12
Grand Ballroom VI (JW Marriott)

189

Exploring 2-D and 3-D Geometry with Polydron Frameworks
Deborah Ann McAllister, Shirley Ann McDonald and Susan M. Bothman
Grade Band Audience: 3 to 5, PreK to 2
103/104 (JW Marriott)

191

Geometry: It's More than Vocabulary
Linda M. Gojak
Grade Band Audience: 6 to 8, 3 to 5
144/145 (Convention Center)

193

Just a Piece of Paper: Linking Geometry, Measurement, and Fractions
Janice B. Koop and Mary J. DeYoung
Grade Band Audience: 6 to 8, 3 to 5
Grand Ballroom II (JW Marriott)

198

You Gotta Know When to Fold: Paper Folding and Geometry!
Deborah A. Crocker and Betty B. Long
Grade Band Audience: Preservice and Inservice, 6 to 8
203/204 (Convention Center)

203

Transform Your Classroom and Construct Learning with Geometry Golf
Nancy Norem Powell
Grade Band Audience: 6 to 8, 9 to 12
Sagamore Ballroom 5 (Convention Center)

216

The Geometry of Letters: Preschoolers and Geometric Reasoning
Kateri Thunder, Robyn Davis and Dana Carrico
Grade Band Audience: PreK to 2
123 (Convention Center)

219

Geometry in Quilts: We've Got It Covered!
Betty B. Long and Deborah A. Crocker
Grade Band Audience: 3 to 5
Sagamore Ballroom 4 (Convention Center)

226

Let's Tessellate!
Rebecca J. Neuwirth
Grade Band Audience: 6 to 8
103/104 (Convention Center)

228

Geometry: Making the Connections
Fred Dillon and Alyssa Holsar
Grade Band Audience: 6 to 8, 9 to 12
107/108 (Convention Center)

230

Visualizing Geometry: Connecting Geometric Ideas to the Real World
Stephanie H. Cooperman and Neil D. Cooperman
Grade Band Audience: 6 to 8, 9 to 12
207 (Convention Center)

234

The Trigonometry of Endurance: Teaching Geometry through Shackleton's Voyage
Justin Dimmel and Brendan Kenny
Grade Band Audience: 9 to 12, Higher Education
120 (Convention Center)

236

Exploring Areas of Triangles: Five Students, Five Different Perspectives
Farshid Safi and George J. Roy
Grade Band Audience: Preservice and Inservice, 9 to 12
140 (Convention Center)

242

Building Bridges through Design: Connecting Math, Science, and Engineering
Darshita N. Shah and Melissa Higgins
Grade Band Audience: 3 to 5, PreK to 2
126/127 (Convention Center)

247

Math in Your Feet: Teaching Geometry through Rhythm and Movement
Malke Rosenfeld
Grade Band Audience: 3 to 5
Sagamore Ballroom 1 (Convention Center)

250

Geometry and Geology: Connections between Mathematics and Earth Science
Jason L. Ermer and Lynn Kirby
Grade Band Audience: 6 to 8
Sagamore Ballroom 7 (Convention Center)

253

From Squares to Conics: Hands-On Geometry Using Free NCTM Resources
Julia Zurkovsky
Grade Band Audience: 9 to 12, 6 to 8
Sagamore Ballroom 5 (Convention Center)

259

It's Not So Complex! Transforming Your Perspective of Complex Numbers
Steve Phelps and Troy Jones
Grade Band Audience: Higher Education, 9 to 12
Sagamore Ballroom 3 (Convention Center)

261

Nontypical Investigations in Geometry for 2011
Michael Serra
Grade Band Audience: Preservice and Inservice, 9 to 12
Marriott Ballroom 5 (Marriott Downtown)

277

Singapore Math: Constructing with Cubes to Understand Volume
Katherine de la Garza
Grade Band Audience: Preservice and Inservice, 3 to 5
Grand Ballroom I (JW Marriott)

279

Teaching Area in the Common Core through Decomposing and Composing
Sybilla Beckmann and Karen Fuson
Grade Band Audience: 6 to 8, 3 to 5
Grand Ballroom VI (JW Marriott)

284

Interactive Geometry in More Dimensions Using Google SketchUp©
Suzanne Harper, Nick Shay and Shannon Driskell
Grade Band Audience: 6 to 8, Preservice and Inservice
Grand Ballroom X (JW Marriott)

289

Find the Area of the Convention Center Using Determinants
Ronald G. Armontrout
Grade Band Audience: 9 to 12
Grand Ballroom V (JW Marriott)

291

Polyhedra You’ve Never Met, But Will Absolutely Want to Use!
Laurie Bass
Grade Band Audience: 9 to 12
103/104 (Convention Center)

292

Using an “Impossible” Construction Problem to Teach a Geometric Theorem
Patricio G. Herbst
Grade Band Audience: Preservice and Inservice, 9 to 12
Sagamore Ballroom 2 (Convention Center)

293

Explorations in Geometry for Teachers and Students
Beth G. Costner and Kelly M. Costner
Grade Band Audience: Preservice and Inservice
Grand Ballroom VIII (JW Marriott)

296

The Power and Beauty of Geometry: Reasoning, Constructing, and Tranforming
J. Michael Shaughnessy
Grade Band Audience: General Interest/All Audiences
Hall F (Convention Center)

317

Making It Real: Using Context Engages Middle School Learners
Gail Englert and Rose Sinicrope
Grade Band Audience: 6 to 8
White River Ballroom F (JW Marriott)

322

Proof or Consequences: Interactive Geometry Investigations Lead to Proof
Paul A. Kennedy and Maurice Burke
Grade Band Audience: 9 to 12
Sagamore Ballroom 2 (Convention Center)

324

The Geometry of Perspective
David A. Thomas
Grade Band Audience: Higher Education, 9 to 12
Grand Ballroom X (JW Marriott)

325

Great High School Investigations Adapted from College Math Journals
Amanda Ketner, Alan Russell and Jan Mays
Grade Band Audience: Preservice and Inservice, 9 to 12
Marriott Ballroom 3/4 (Marriott Downtown)

330

Building Number and Geometry Power with Strategic Intervention and Challenge
Jennifer Taylor-Cox
Grade Band Audience: 3 to 5, PreK to 2
121/122 (Convention Center)

331

Inside, Outside, Upside-Down!
Libby S. Pollett and Dana Sparkman Cleghorn
Grade Band Audience: 3 to 5, PreK to 2
203/204 (Convention Center)

332

Slide, Flip, and Turn! Transform Geometric Shapes into Unique Tessellations
Kim K. Hartweg
Grade Band Audience: 3 to 5, PreK to 2
White River Ballroom I/J (JW Marriott)

335

What Is Spatial Sense, and Why Is It So Special?
Marilyn Lance
Grade Band Audience: 3 to 5, PreK to 2
Grand Ballroom IX (JW Marriott)

339

Building a Bridge from Elementary School Mathematics to Formal Geometry
Juanita R. Walker and Barbara Post
Grade Band Audience: 6 to 8, 3 to 5
Grand Ballroom IV (JW Marriott)

344

What's That Polygon in the Mirror?
Christie Perry and Vivian F. Cyrus
Grade Band Audience: 6 to 8
Grand Ballroom II (JW Marriott)

345

Yes, All Middle School Students Can Reason Proportionally
Michael Lutz
Grade Band Audience: 6 to 8
Sagamore Ballroom 7 (Convention Center)

346

Folding and Unfolding: Making Sense of Surface Area
Ziv Feldman and Matthew Chedister
Grade Band Audience: Preservice and Inservice, 6 to 8
Marriott Ballroom 7/8 (Marriott Downtown)

352

Construct Worthwhile Tasks for the Geoboard and Transform Your Class
Greisy Winicki Landman
Grade Band Audience: 9 to 12
White River Ballroom E (JW Marriott)

330.1

Exploring Shape Games: The Math Begins When the Game Ends!
M. Katherine Gavin and Janine Firmender
Grade Band Audience: PreK to 2, 3 to 5
Sagamore Ballroom 1 (Convention Center)

356

Experiencing Symmetry: Geometric Transformations in Art, Music, and Dance
Scott E. Kim
Grade Band Audience: General Interest/All Audiences
500 Ballroom (Convention Center)

372

A Day in the Life of a Fractal
Neil D. Cooperman and Stephanie H. Cooperman
Grade Band Audience: 9 to 12, 6 to 8
White River Ballroom G/H (JW Marriott)

374

Geometry Concepts Applied to Physics Problem Solving in Mathematics Classrooms
Sherrie L. Wisdom
Grade Band Audience: 9 to 12, 6 to 8
140 (Convention Center)

378

Transforming Geometric Proof with Reflections, Rotations, and Translations
Kristin A. Camenga
Grade Band Audience: 9 to 12
Grand Ballroom X (JW Marriott)

382

The Law of Cosines (without the Cosines)
Ellen Ford and Bill Rosenthal
Grade Band Audience: 9 to 12, Higher Education
207 (Convention Center)

383

Experiencing the Eüler Line and More!
James M. Rubillo
Grade Band Audience: Preservice and Inservice, 9 to 12
Hall F (Convention Center)

384

Getting Them to Talk about It
Kadian M. Callahan
Grade Band Audience: Preservice and Inservice, Higher Education
120 (Convention Center)

387

Spotlight on Geometry
Charyl Kerns Hills
Grade Band Audience: PreK to 2
Marriott Ballroom 1/2 (Marriott Downtown)

388

Building Early-Childhood Foundations of Geometry
Jeanne White
Grade Band Audience: Preservice and Inservice, PreK to 2
White River Ballroom I/J (JW Marriott)

393

Constructing Zodiac Constellations from Ancient Chinese Tangrams
Judit Kerekes
Grade Band Audience: 3 to 5
Marriott Ballroom 5 (Marriott Downtown)

396

Geometric and Algebraic Reasoning through Pattern Generalization
Galina Dobrynina
Grade Band Audience: Preservice and Inservice, 3 to 5
Grand Ballroom II (JW Marriott)

400

Engaging Young Women in Geometric Investigations
Elizabeth Yanik and Marvin Harrell
Grade Band Audience: 6 to 8
Sagamore Ballroom 7 (Convention Center)

402

Cutting Apart or Putting Together: Geometrical Reasoning Practice with Shapes
James King
Grade Band Audience: 9 to 12, 6 to 8
105/106 (Convention Center)

406

NSpiring Investigations of Quadrilaterals and Their Properties
Ilene Hamilton
Grade Band Audience: 9 to 12
Marriott Ballroom 7/8 (Marriott Downtown)

408

Building Conway’s Pencil Models
Charles F. Schwartz
Grade Band Audience: 9 to 12, Higher Education
Grand Ballroom IX (JW Marriott)

404.1

Interesting Ideas, Manipulatives, and Activities for Teaching Geometry Topics
Christine Mikles
Grade Band Audience: 9 to 12, 6 to 8
Grand Ballroom IV (JW Marriott)

411

Broaden Your Perspective: Geometry—What's in Your Area?
Iris DeLoach Johnson and Michael Todd Edwards
Grade Band Audience: General Interest/All Audiences
Sagamore Ballroom 6 (Convention Center)

432

Geometry with E-Motion! [New Teacher Strand]
Hannah Slovin and Barbara J. Dougherty
Grade Band Audience: 6 to 8
111/112 (Convention Center)

435

Integrating The Geometer’s Sketchpad® (GSP) into Understanding the Pythagorean Theorem
Olufunke Adefope and Mi Yeon Lee
Grade Band Audience: Preservice and Inservice, 6 to 8
125 (Convention Center)

436

Transform Your Geometry Teaching with These Free, Online Resources
Steve Risberg and Annie Fetter
Grade Band Audience: 9 to 12, 6 to 8
128 (Convention Center)

441

Geometry and Technology: The Unit Circle and Geogebra
Zyad Bawatneh, Erhan Haciomeroglu and Deana L. Deichert
Grade Band Audience: Preservice and Inservice, 9 to 12
141/142 (Convention Center)

449

Time Travel with M. C. Escher from Islamic Artto Infinity
Carol D. Desoe
Grade Band Audience: General Interest/All Audiences
White River Ballroom F (JW Marriott)

461

Geometry and the Real World: Budget Math Trips
Ryan Higgins, Amy English-Hunter and Sarah Bush
Grade Band Audience: 6 to 8
109/110 (Convention Center)

470

Using Your Graphing Calculator to Explore Translations, Rotations, and Reflections
Fred Decovsky
Grade Band Audience: 6 to 8, 9 to 12
Marriott Ballroom 6 (Marriott Downtown)

483

Grab Your Students by Their Brains
Mary Alice Hatchett
Grade Band Audience: 3 to 5, PreK to 2
Grand Ballroom IX (JW Marriott)

487

Geometry Origami: Using Rich Vocabulary for Paper-Folding Tasks
Rebecca Borowski and Kamela Dauntain
Grade Band Audience: 3 to 5
Marriott Ballroom 7/8 (Marriott Downtown)

493

Thirteen Formulas or One Idea? Area, Volume, Dissections, and Proof
Cindy Carter and Keith Civin
Grade Band Audience: 6 to 8, 9 to 12
Sagamore Ballroom 3 (Convention Center)

497

Does a Tetrahedron Have an Eüler Line?
Troy Jones and Steve Phelps
Grade Band Audience: Higher Education, 9 to 12
Sagamore Ballroom 5 (Convention Center)

499

Transform Your Geometry classroom by Using Transformational Geometry and Technology
Raymond J. Klein
Grade Band Audience: Preservice and Inservice, 9 to 12
126/127 (Convention Center)

504

NCTM Business Meeting
Kichoon Yang
Grade Band Audience: General Interest/All Audiences
120 (Convention Center)

521

Transformers
Candide Walton and Tamela Hanebrink
Grade Band Audience: 6 to 8
Grand Ballroom III (JW Marriott)

522

Using Geometry as a Springboard to Mathematics
Glenda Lappan
Grade Band Audience: 6 to 8
Hall F (Convention Center)

527

Geometry on the SAT: Linking Content and Process
Robin K. O'Callaghan and Andrew D. Schwartz
Grade Band Audience: 9 to 12
Sagamore Ballroom 6 (Convention Center)

529

Promoting Higher-Level Geometric Thinking through Constructions and Writing Assignments
Jennifer V. Nickell and Kevin E. Carlin
Grade Band Audience: 9 to 12
White River Ballroom C/D (JW Marriott)

533

Geometric Constructions: Centered on the Eüler Line
Astrida Cirulis
Grade Band Audience: Preservice and Inservice, 9 to 12
Grand Ballroom X (JW Marriott)

533.3

Using BuzzMath with your Students-Immediate Feedback, Differentiation, Historical Connections
ExWksp: BuzzMath.com
Grade Band Audience: 6 to 8
117 (Convention Center)

536

Stop! Help! I Thought You Knew Your Shapes!
Laura L. Gray and Brenda Dorman
Grade Band Audience: PreK to 2
124 (Convention Center)

541

It's a Tangram World
Peggy L. McLean
Grade Band Audience: Preservice and Inservice, 3 to 5
White River Ballroom I/J (JW Marriott)

543

Deep Thinking and Real Fun with Vertices, Edges, and Faces
Tracy Manousaridis, Shelle Crandell and Samantha Lowe
Grade Band Audience: 6 to 8, 3 to 5
144/145 (Convention Center)

547

Teaching Geometry through Music Instrument Making and Designing
Song An, Mary Margaret Capraro and Anastasia Lee
Grade Band Audience: 3 to 5, 6 to 8
203/204 (Convention Center)

549

Paper-Folding Magic
Joy W. Black
Grade Band Audience: Preservice and Inservice, 6 to 8
105/106 (Convention Center)

554

Dance to the Music
Chris R. Mackmin and Linda Shepard
Grade Band Audience: 9 to 12
101/102 (Convention Center)

568

Area: No Problem?
Dennis C. Mulhearn
Grade Band Audience: 6 to 8, 3 to 5
White River Ballroom C/D (JW Marriott)

572

Technology, Tangibles, and Simple Polyhedra
Jane A. Whitmire
Grade Band Audience: 6 to 8
Marriott Ballroom 3/4 (Marriott Downtown)

573

Developing Geometric Thinking through Paper Folding
Peter S. Wiles
Grade Band Audience: Preservice and Inservice, 6 to 8
Wabash Ballroom 3 (Convention Center)

575

Crossing the Lines: Where Geometry and Literature Meet
Byung-In Seo and Susan Hillman
Grade Band Audience: 9 to 12, 6 to 8
Grand Ballroom I (JW Marriott)

577

Proportional Reasoning, Pick's Theorem, and an Open-Source Graphics Tool
Brian H. Giza and Olga Kosheleva
Grade Band Audience: 6 to 8, 9 to 12
140 (Convention Center)

580

Different Types of Interactive Geometry Problems to Foster Mathematical Discussion
Anna E. Baccaglini-Frank
Grade Band Audience: 9 to 12
Grand Ballroom V (JW Marriott)

568.1

Transforming My Perspective on the Geometric Knowledge Needed for Teaching
Enrique Galindo and Kai-Ju Yang
Grade Band Audience: 6 to 8, 3 to 5
Marriott Ballroom 9/10 (Marriott Downtown)

607

Thinking Deeply about Two Elementary Math Concepts: Area and Perimeter
Wayne Nirode
Grade Band Audience: 9 to 12
125 (Convention Center)

610

Shaping Up in Geometry
Lisa K. Rogers and Amy C. Mayfield
Grade Band Audience: PreK to 2
Sagamore Ballroom 3 (Convention Center)

612

Developing Geometric Concepts with Struggling Students
Sandra L. Atkins
Grade Band Audience: 3 to 5, PreK to 2
105/106 (Convention Center)

615

Folding Your Way to Geometry Understanding
Katherine L. Reid
Grade Band Audience: 3 to 5
126/127 (Convention Center)

618

Investigating Area, Volume: Manipulatives, The Geometers’ Sketchpad® (GSP), TinkerPlots™
Hyunyi Jung and Diana V. Lambdin
Grade Band Audience: 6 to 8, Preservice and Inservice
Wabash Ballroom 2 (Convention Center)

619

Access Geometry through Architectural Design
Frank A. Carrillo
Grade Band Audience: 9 to 12
101/102 (Convention Center)

620

An Introduction to Geometry on the TI-NSpire™ Calculator
Dianna Galante
Grade Band Audience: 9 to 12
Sagamore Ballroom 1 (Convention Center)

622

If They Only Knew How Well Transformations Make Things Clear!
Tim McNamara
Grade Band Audience: Preservice and Inservice, 9 to 12
121/122 (Convention Center)

626

Women and Geometry
Judy A. Werner
Grade Band Audience: General Interest/All Audiences
111/112 (Convention Center)

632

Investigation Stations
Lynn Gannon Patterson and Meagan Musselman
Grade Band Audience: 6 to 8, 3 to 5
Sagamore Ballroom 6 (Convention Center)

639

Stop Teaching and Let Students Learn Geometry
Michael J. Bosse
Grade Band Audience: Preservice and Inservice, 9 to 12
141/142 (Convention Center)

642

Visualize It, Shape It, and Locate It
Rhonda Horne and Eva deVries
Grade Band Audience: PreK to 2
Sagamore Ballroom 1 (Convention Center)

647

Rotate, Reflect, Project, and Flatten: Transformers of the World, Unite!
Polina Sabinin
Grade Band Audience: 6 to 8, 3 to 5
105/106 (Convention Center)

648

Square or Rhombus? Helping Students Develop Relational Thinking through Geometry
Dicky Ng and Katie Anderson
Grade Band Audience: 6 to 8, 3 to 5
124 (Convention Center)

649

A Touchable Mathematics with the 4D Frame
Hogul Park, Inchul Jung and Mangoo Park
Grade Band Audience: 6 to 8
121/122 (Convention Center)

659

Using Unique and Unusual Materials to Teach Geometry
Carolyn L. Pinchback
Grade Band Audience: 3 to 5
120 (Convention Center)

661

Manipulatives, Real and Virtual: Making the Twenty-first-Century Classroom Connection
John F. Thomson
Grade Band Audience: 6 to 8, 3 to 5
103/104 (Convention Center)

671

Problem-Based Learning (PBL): A Transformed Perspective for Standards-Based Geometry
Sunshine Greene and Carmel Schettino
Grade Band Audience: Higher Education, 9 to 12
201/202 (Convention Center)

672

The Art of Geometry
Bathsheba Grossman
Grade Band Audience: General Interest/All Audiences
Hall F (Convention Center)