New dynamics in dynamic geometry: Dragging constructed points. (March 2020)

• Record Type: Journal Article
• Authors: Selaković, Milica; Marinković, Vesna; Janičić, Predrag
• Is Part Of: Journal of symbolic computation. Volume 97(2020)
• Page Start: 3
• Page End: 15
• Publication Date: 2020-03
• Subjects: Dynamic geometry software -- Geometry construction problems; Mathematics -- Data processing -- Periodicals; Numerical analysis -- Data processing -- Periodicals; Automatic programming (Computer science) -- Periodicals; Mathématiques -- Informatique -- Périodiques; Analyse numérique -- Informatique -- Périodiques; Programmation automatique -- Périodiques; Automatic programming (Computer science); Mathematics -- Data processing; Numerical analysis -- Data processing; Periodicals; Electronic journals; 510.285
• DOI: 10.1016/j.jsc.2018.12.002
• Languages: English
• ISSNs: 0747-7171

Abstract

Abstract: Dynamic Geometry Software (DGS) is present for more than three decades: it found its way to classrooms worldwide and it is now an irreplaceable component of mathematical education. From the very beginning and still, DGS tools are built around one central scenario: the user chooses several (free) points and, using them, constructs some other points and other geometric objects. Then, the user can move ("drag") a chosen free point and explore how the constructed points and other constructed objects change. In this paper we describe one new DGS scenario: the user can move the constructed points and explore how the free points and the constructed objects change accordingly. This scenario uses a solver for geometry construction problems. We implemented this DGS feature within our prototype tool Touch&Drag, developed for touch-based devices. The presented feature can be implemented in other DGS tools, too.