Proposals
Below are some proposals for talks from the past (and current). By clicking on the ID number, more details are shown. By default, these are sorted chronologically (recent first) and by then by last name. The data can be sorted by alternate means by using the links at the top right, each allowing ascending or descending orders.
Displaying 201-220 of 471 results.
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ID:
377
Year: 2014
Name: Jacob Heidenreich
Institution: Loras College
Subject area(s): math education
Title of Talk: Toys, Puzzles, and Games: the Importance of Play in the Classroom
Abstract: Much research has been done over the past few decades concerning using games in education. One fruitful line of investigation has been on the importance of play in the learning experience. In this talk, I will discuss college-level educational goals and how they can be served by creating a playful learning environment in the classroom. I will also discuss and demonstrate the toys, puzzles, and games I developed for use in the classroom.
Year: 2014
Name: Jacob Heidenreich
Institution: Loras College
Subject area(s): math education
Title of Talk: Toys, Puzzles, and Games: the Importance of Play in the Classroom
Abstract: Much research has been done over the past few decades concerning using games in education. One fruitful line of investigation has been on the importance of play in the learning experience. In this talk, I will discuss college-level educational goals and how they can be served by creating a playful learning environment in the classroom. I will also discuss and demonstrate the toys, puzzles, and games I developed for use in the classroom.
ID:
487
Year: 2017
Name: Jacob Heidenreich
Institution: Loras College
Subject area(s): teaching college math
Title of Talk: Using Games in the Classroom
Abstract: In this talk, Dr. Heidenreich will be presenting several games he's developed to teach various concepts in his classroom. Included would be games usable in College Algebra, Pre-Calculus, and Calculus, involving the concepts of increasing and decreasing, concave up and concave down, limits and asymptotes. Attendees can get electronic versions of all the games shared at this talk.
Year: 2017
Name: Jacob Heidenreich
Institution: Loras College
Subject area(s): teaching college math
Title of Talk: Using Games in the Classroom
Abstract: In this talk, Dr. Heidenreich will be presenting several games he's developed to teach various concepts in his classroom. Included would be games usable in College Algebra, Pre-Calculus, and Calculus, involving the concepts of increasing and decreasing, concave up and concave down, limits and asymptotes. Attendees can get electronic versions of all the games shared at this talk.
ID:
488
Year: 2017
Name: Jacob Heidenreich
Institution: Loras College
Subject area(s): teaching college math
Title of Talk: Using Games in the Classroom
Abstract: In this talk, Dr. Heidenreich will demonstrate several games he's developed to teach various mathematical concepts. The games investigate the ideas of increasing and decreasing functions, concavity, asymptotes and limits, and would be suitable for College Algebra through Calculus I. Electronic versions of the games will be share with any attendee interested.
Year: 2017
Name: Jacob Heidenreich
Institution: Loras College
Subject area(s): teaching college math
Title of Talk: Using Games in the Classroom
Abstract: In this talk, Dr. Heidenreich will demonstrate several games he's developed to teach various mathematical concepts. The games investigate the ideas of increasing and decreasing functions, concavity, asymptotes and limits, and would be suitable for College Algebra through Calculus I. Electronic versions of the games will be share with any attendee interested.
ID:
275
Year: 2010
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): Teaching Calculus
Title of Talk: Ideas and Examples for Calculus
Abstract: We give some non traditional problems from various sources that help with the understanding of the ideas of calculus. We show how the concept of continuity can be used to get a better grasp of a situation and to correct bad judgement. The goal is not to show nice calculations, but to show ways of thinking.
Year: 2010
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): Teaching Calculus
Title of Talk: Ideas and Examples for Calculus
Abstract: We give some non traditional problems from various sources that help with the understanding of the ideas of calculus. We show how the concept of continuity can be used to get a better grasp of a situation and to correct bad judgement. The goal is not to show nice calculations, but to show ways of thinking.
ID:
309
Year: 2011
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): First Semester Calculus, Group Work
Title of Talk: Group Activities In Calculus
Abstract: I have been devoting one day a week to group work in calculus. I show the type of activities that I have used. I have some data on the interest shown, and how these group scores compare with the traditional tests scores.
Year: 2011
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): First Semester Calculus, Group Work
Title of Talk: Group Activities In Calculus
Abstract: I have been devoting one day a week to group work in calculus. I show the type of activities that I have used. I have some data on the interest shown, and how these group scores compare with the traditional tests scores.
ID:
71
Year: 2004
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s):
Title of Talk: The mathematics of navigation in aviation
Abstract: We explain the how and why of Compass errors and how to work around them. We discuss the NDB (non-directional beacon) and the geometry behind its use for navigation. We mention the Precision approach. And we present some contradictions from explaining lift by using Bernoulli's theorem.
Year: 2004
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s):
Title of Talk: The mathematics of navigation in aviation
Abstract: We explain the how and why of Compass errors and how to work around them. We discuss the NDB (non-directional beacon) and the geometry behind its use for navigation. We mention the Precision approach. And we present some contradictions from explaining lift by using Bernoulli's theorem.
ID:
349
Year: 2012
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): Geometry
Title of Talk: Applications of Projective Tiling
Abstract: We give a low level approach to the theorem that in a photograph, all parallel lines meet at a point. We prove this theorem using analytic geometry. We point out some mathematical properties of projections that are not displayed in photographs. And we show how to estimate areas and distances in photographs without doing numerical calculations. This material would be appropriate for a Math Club presentation or a special topic to show an application of math to forensic investigations.
Year: 2012
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): Geometry
Title of Talk: Applications of Projective Tiling
Abstract: We give a low level approach to the theorem that in a photograph, all parallel lines meet at a point. We prove this theorem using analytic geometry. We point out some mathematical properties of projections that are not displayed in photographs. And we show how to estimate areas and distances in photographs without doing numerical calculations. This material would be appropriate for a Math Club presentation or a special topic to show an application of math to forensic investigations.
ID:
360
Year: 2013
Name: Irvin R. Hentzel
Institution: Iowa State University
Subject area(s):
Title of Talk: Calculus Bloopers I Have Made
Abstract: There are "simplifying assumptions" used in First Year Calculus which have become so ingrained in my teaching that I never give them a second thought. I examine the following statements as they are often presented in Calculus Books and show inconsistencies which are often overlooked. (1) Work = Integral F ds (2) For a force to move an object in a certain direction, there must be a component of the force in that direction. (3) Acceleration normal to the direction of motion changes the direction, but leaves the speed unchanged. (4) The Bernoulli Principle: the greater the velocity, the lower the pressure. (5) Neglecting air resistance in earth's gravity, all things fall at the same rate. (6) The Proof of Rolle's Theorem.
Year: 2013
Name: Irvin R. Hentzel
Institution: Iowa State University
Subject area(s):
Title of Talk: Calculus Bloopers I Have Made
Abstract: There are "simplifying assumptions" used in First Year Calculus which have become so ingrained in my teaching that I never give them a second thought. I examine the following statements as they are often presented in Calculus Books and show inconsistencies which are often overlooked. (1) Work = Integral F ds (2) For a force to move an object in a certain direction, there must be a component of the force in that direction. (3) Acceleration normal to the direction of motion changes the direction, but leaves the speed unchanged. (4) The Bernoulli Principle: the greater the velocity, the lower the pressure. (5) Neglecting air resistance in earth's gravity, all things fall at the same rate. (6) The Proof of Rolle's Theorem.
ID:
157
Year: 2006
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): Voting Strategies
Title of Talk: Arrow's Hypotheses
Abstract: We prove three consequences of Arrow's Hypotheses. (1) If some of the ballots put x first and the rest put x last, then x has to be either first or last in the group ranking. (2) If the rankings of a with b match the rankings of c with d on each ballot, then the group ranking must also match the ranking of a with b and c with d. (3) The group ranking must match one of the ballots. This material was taken from "Three Brief Proofs of Arrow's Impossibility Theorem" by John Geanakoplos. The point of the talk is to show that the proofs are very elementary. The various strategies for voting are covered in many very elementary texts. Their discussion is directed towards with of the hypotheses the voting strategies violate. This talk shows how the hypotheses can be combined to directly obtain conclusions that do not seem as fundamentally fair as the original hypotheses.
Year: 2006
Name: Irvin Hentzel
Institution: Iowa State University
Subject area(s): Voting Strategies
Title of Talk: Arrow's Hypotheses
Abstract: We prove three consequences of Arrow's Hypotheses. (1) If some of the ballots put x first and the rest put x last, then x has to be either first or last in the group ranking. (2) If the rankings of a with b match the rankings of c with d on each ballot, then the group ranking must also match the ranking of a with b and c with d. (3) The group ranking must match one of the ballots. This material was taken from "Three Brief Proofs of Arrow's Impossibility Theorem" by John Geanakoplos. The point of the talk is to show that the proofs are very elementary. The various strategies for voting are covered in many very elementary texts. Their discussion is directed towards with of the hypotheses the voting strategies violate. This talk shows how the hypotheses can be combined to directly obtain conclusions that do not seem as fundamentally fair as the original hypotheses.
ID:
258
Year: 2009
Name: Eugene Herman
Institution: Grinnell College
Subject area(s):
Title of Talk: Hankel Operators and Combinatorial Identities
Abstract: We show that every bounded Hankel operator H on the Hilbert space of square-summable sequences can be factored as H = MM^*, where M maps a space of square-integrable functions to their corresponding moment sequences. By expanding these functions in a Fourier series of orthogonal polynomials, we obtain identities that connect the entries of the Hankel matrices with the orthogonal polynomials.
Year: 2009
Name: Eugene Herman
Institution: Grinnell College
Subject area(s):
Title of Talk: Hankel Operators and Combinatorial Identities
Abstract: We show that every bounded Hankel operator H on the Hilbert space of square-summable sequences can be factored as H = MM^*, where M maps a space of square-integrable functions to their corresponding moment sequences. By expanding these functions in a Fourier series of orthogonal polynomials, we obtain identities that connect the entries of the Hankel matrices with the orthogonal polynomials.
ID:
117
Year: 2005
Name: Eugene Herman
Institution: Grinnell College
Subject area(s): Linear geometry
Title of Talk: Equidistant Sets and Similarity Transformations
Abstract: The main result to be presented is the following: If f is a nonconstant function from R^n to R^n that preserves equality of distances, then f is a similarity transformation. A key concept in the proof is a special type of affinely independent set of points -- a set of points that are equidistant from one another. The proof uses elementary linear algebra and geometric reasoning and little else. Much of the emphasis in the presentation will be on the interplay of algebra and geometry. Also, there will be some remarks on the connections with classical geometry, including the Fundamental Theorem of Affine Geometry.
Year: 2005
Name: Eugene Herman
Institution: Grinnell College
Subject area(s): Linear geometry
Title of Talk: Equidistant Sets and Similarity Transformations
Abstract: The main result to be presented is the following: If f is a nonconstant function from R^n to R^n that preserves equality of distances, then f is a similarity transformation. A key concept in the proof is a special type of affinely independent set of points -- a set of points that are equidistant from one another. The proof uses elementary linear algebra and geometric reasoning and little else. Much of the emphasis in the presentation will be on the interplay of algebra and geometry. Also, there will be some remarks on the connections with classical geometry, including the Fundamental Theorem of Affine Geometry.
ID:
107
Year: 2005
Name: Scott Herriott
Institution: Maharishi University of Management
Subject area(s): Math education; college algebra
Title of Talk: The "Basic Four" Elementary Functions and Their Applications in College Algebra
Abstract: The "Basic Four" elementary functions are those that result from the association of an additive or multiplicative change in X with an additive or multiplicative change in Y (linear, exponential, logarithmic and power). We consider the importance of these functions in the college algebra course in terms of the breadth of their applications in the fields of study that college algebra students will major in.
Year: 2005
Name: Scott Herriott
Institution: Maharishi University of Management
Subject area(s): Math education; college algebra
Title of Talk: The "Basic Four" Elementary Functions and Their Applications in College Algebra
Abstract: The "Basic Four" elementary functions are those that result from the association of an additive or multiplicative change in X with an additive or multiplicative change in Y (linear, exponential, logarithmic and power). We consider the importance of these functions in the college algebra course in terms of the breadth of their applications in the fields of study that college algebra students will major in.
ID:
95
Year: 2004
Name: Al Hibbard
Institution: Central College
Subject area(s): Statistics
Title of Talk: Introduction to the statistical software Fathom
Abstract: This talk wiill give a brief introduction to how and why to use the Fathom software. If you are familiar with Geometer's Sketchpad, this produced by the same company and is similar in its ease of use
Year: 2004
Name: Al Hibbard
Institution: Central College
Subject area(s): Statistics
Title of Talk: Introduction to the statistical software Fathom
Abstract: This talk wiill give a brief introduction to how and why to use the Fathom software. If you are familiar with Geometer's Sketchpad, this produced by the same company and is similar in its ease of use
ID:
356
Year: 2013
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: A tour of the new Iowa section web site
Abstract: I will give an overview of the content and structure of the new section web site including special emphasis on the tools portion and some of the pages related to the history of the section. I will also explain the process I took in coming to its current structure.
Year: 2013
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: A tour of the new Iowa section web site
Abstract: I will give an overview of the content and structure of the new section web site including special emphasis on the tools portion and some of the pages related to the history of the section. I will also explain the process I took in coming to its current structure.
ID:
132
Year: 2005
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: A tour of the new website for the IA section of the MAA
Abstract: This will be an overview of some of the new features that are available for members of the IA section of the MAA including looking at accessing the section database. Part of the talk will be particularly relevant for officers and liaisons.
Year: 2005
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: A tour of the new website for the IA section of the MAA
Abstract: This will be an overview of some of the new features that are available for members of the IA section of the MAA including looking at accessing the section database. Part of the talk will be particularly relevant for officers and liaisons.
ID:
198
Year: 2007
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: Overview of the version of Mathematica currently in development
Abstract: This talk will look at some of the new features that are being developed for the version of Mathematica currently in development. An overview will be given as well as some illustrations of how to exploit some of the new features.
Year: 2007
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: Overview of the version of Mathematica currently in development
Abstract: This talk will look at some of the new features that are being developed for the version of Mathematica currently in development. An overview will be given as well as some illustrations of how to exploit some of the new features.
ID:
496
Year: 2017
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: Some applications of the Archimedean Property
Abstract: I will look at some applications of the Archimedean Property both within and about my teaching.
Year: 2017
Name: Al Hibbard
Institution: Central College
Subject area(s):
Title of Talk: Some applications of the Archimedean Property
Abstract: I will look at some applications of the Archimedean Property both within and about my teaching.
ID:
257
Year: 2009
Name: Michael Hilgemann
Institution: Iowa State University
Subject area(s): Algebra
Title of Talk: The classification of finite-dimensional Hopf algebras
Abstract: Hopf algebras can be considered generalizations of groups, and group algebras are basic examples of such objects. In recent years there have been developments in the classification of finite-dimensional Hopf algebras over an algebraically closed field of characteristic 0, which include many examples which are neither group algebras nor the linear dual of group algebras. In this talk, we will highlight these classification results and some of the useful properties that general finite-dimensional Hopf algebras share with finite group algebras. In particular, we will discuss recent joint work with Richard Ng that completes the classification of Hopf algebras of dimension 2p^2, for p an odd prime.
Year: 2009
Name: Michael Hilgemann
Institution: Iowa State University
Subject area(s): Algebra
Title of Talk: The classification of finite-dimensional Hopf algebras
Abstract: Hopf algebras can be considered generalizations of groups, and group algebras are basic examples of such objects. In recent years there have been developments in the classification of finite-dimensional Hopf algebras over an algebraically closed field of characteristic 0, which include many examples which are neither group algebras nor the linear dual of group algebras. In this talk, we will highlight these classification results and some of the useful properties that general finite-dimensional Hopf algebras share with finite group algebras. In particular, we will discuss recent joint work with Richard Ng that completes the classification of Hopf algebras of dimension 2p^2, for p an odd prime.
ID:
513
Year: 2018
Name: Theron Hitchman
Institution: University of Northern Iowa
Subject area(s): topology
Title of Talk: Playing with topology: knots and branched covers
Abstract: In joint work with undergraduate Dan Tarnow, we played with lifting knot diagrams from the sphere to other surfaces using branched covers and a combinatorial construction called a 'butterfly diagram.' We played with many examples, including finding many lifts of the trefoil. I'll share our small collection of results, some of the 3d printed knots that Dan made, and how I am pretty sure we asked the wrong questions.
Year: 2018
Name: Theron Hitchman
Institution: University of Northern Iowa
Subject area(s): topology
Title of Talk: Playing with topology: knots and branched covers
Abstract: In joint work with undergraduate Dan Tarnow, we played with lifting knot diagrams from the sphere to other surfaces using branched covers and a combinatorial construction called a 'butterfly diagram.' We played with many examples, including finding many lifts of the trefoil. I'll share our small collection of results, some of the 3d printed knots that Dan made, and how I am pretty sure we asked the wrong questions.
ID:
266
Year: 2009
Name: Theron Hitchman
Institution: University of Northern Iowa
Subject area(s): teaching, geometry
Title of Talk: Proof in Geometry: Euclid and a Class Journal
Abstract: I'll discuss how I use Euclid as a text, and a class journal as assessment in a Euclidean Geometry course aimed at pre-service teachers.
Year: 2009
Name: Theron Hitchman
Institution: University of Northern Iowa
Subject area(s): teaching, geometry
Title of Talk: Proof in Geometry: Euclid and a Class Journal
Abstract: I'll discuss how I use Euclid as a text, and a class journal as assessment in a Euclidean Geometry course aimed at pre-service teachers.