North American GeoGebra Journal (GeoGebra Institute of Ohio)
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88 research outputs found
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Artistic Symmetry: Finding Richness in Tattoo Design
No full textIn this article, I describe my response to the challenge of creating a rich task for my tenth grade geometry course - namely, the creation of an interdisciplinary tattoo project that provides students with opportunities to connect art, symmetry, and transformational geometry in engaging, exploratory, and personally meaningful ways. Links to student worksheets, answer keys, teacher notes, and GeoGebra sketches are provided. 
Systems of Inequalities, Using Geogebra to plan your party
No full textThis article provides a brief description of rich tasks, and then features a problem involving the use of Geogebra and Systems of Inequalities to plan a fundraising event as a collaborative effort for High School Algebra students
GeoGebra as a tool to explore, conjecture, verify, justify, and prove: The case of a circle
No full textGeoGebra is a good platform for experimentation which supports the development of mathematical concepts and the abilities to explain geometric properties. In this paper, a series of GeoGebra activities which aims at consolidating students’ understandings on the concepts of center and radius and developing the concepts of locus and perpendicular bisector through experiencing the process of exploring, conjecturing, verifying, justifying and proving is described
Volume and area ratios with GeoGebra
No full textThis article was motivated by student work in a biological laboratory, where a question was asked about the liquid level corresponding to 1/5 of the volume of a laboratory flask. The authors analyze the issue of volume and area ratios using GeoGebra, presenting various dynamic GeoGebra models including a model of the experiment which initiated the article
Using GeoGebra to develop primary school students' understanding of reflection
No full textThis paper presents a sequence of instructional activities with GeoGebra for the teaching of reflection in primary school. The authors demonstrate a way in which GeoGebra can be used to design an instructional program based on the stages of the 5Es instructional model (engagement, exploration, explanation, elaboration, and evaluation)
Study of functions in a GeoGebra environment during "learning week"
No full textIn this paper, the authors summarize their experience using GeoGebra during an intensive, one-week course (i.e., ``learning week''). High school students engaged in collaborative problem-solving activities and explorations involving the limits and derivatives of elementary functions and function graphs. The ``hide and show'' features of GeoGebra were used to conceal (and reveal) analytic function forms from students. The final assessment and evaluation test suggests that GeoGebra is a useful tool in the study of function and calculus concepts.
 
Evangelizing beyond early adopters: Developing materials to train teachers in the use of GeoGebra
No full textAbstract: The author has presented 20 workshops teaching high school and college teachers to use GeoGebra. The formats have included one, two, and four hour workshops at professional meetings, all day in service sessions at high schools, and week long on line workshops through the MAA PREP program. One indication of the successfulness of the workshops is that a significant number of participants in the workshops have subsequently made presentations of their own at professional meetings. This paper explores working principles that should inform preparation of training material and gives an outline of material that is already available and what still remains to be developed
Investigating the Generalization of a Special Property of Cubic Polynomials to Higher Degree Polynomials
No full textThe article discusses how to use Geogebra to illustrate the generalization of a special property of cubic polynomials. The generalization is discussed for fourth and fifth degree polynomials and illustrated with Geogebra. The article discusses the general formula, a n-2 degree polynomial, for finding the nth zero in terms of n-1 of the zeros of the nth degree polynomial
GeoGebra in financial education
No full textIn this paper, the authors discuss the use of GeoGebra in the teaching of financial issues in basic and secondary schools and in teacher preparation courses. By means of example, the authors illustrate the use of GeoGebra as a vehicle for explaining present-day financial issues while providing students with skills necessary to make well-informed monetary decisions. The dynamic features of GeoGebra encourage experimentation and deep conceptual understanding of the mathematics underpinning various financial formulas
GeoGebra as a frontend to generating graphics for LaTeX
No full textGeoGebra can be used to create graphics which then can be exported for inclusion in LaTeX, documents for presentations, research articles, or classroom materials such as quizzes, exams, and homework. Â Graphics can be exported in various image formats (e.g., png) or by using the combination PGF/TikZ package. This article aims to demonstrates how to export graphics created in GeoGebra and import these graphics into a LaTeX, document