Nashville, Tennessee, USA: Association for the Advancement of Computing in Education (AACE). Mishra (Eds.), Proceedings of SITE 2011-Society for Information Technology & Teacher Education International Conference (pp. Using Wiki As A Reflection Tool In A Technology Class. Not much is reported by way of research concerning the use of wiki as a reflective tool. Drawn from its definition, wikis are always used as collaboration and sharing tools in education in order to promote collaborative learning. A wiki, as defined by Franklin and Harmelen (2007), is “a system that allows one or more people to build up a corpus of knowledge in a set of interlinked web pages, using a process of creating and editing pages” (p. This ongoing study aims at finding out undergraduate students' perceptions of using wikis as reflection tool in a technology class. In addition to this, the use of this model can also help to focus not only on. The use of the Brookfield model also helps to promote continuous learning and development which is also important in the education environment (Bulpitt & Martin, 2005). Wikis and blogs are web-based tools which have been used in different ways in education. This model of reflection is used in a classroom setting to improve professional development. This includes the point F, which is not mentioned above.In recent years there has been a rapid increase in the use of web-based tools in education. They are in the plane of symmetry of the whole figure. These two chords and the parabola's axis of symmetry PM all intersect at the point M.Īll the labelled points, except D and E, are coplanar. Another chord BC is the perpendicular bisector of DE and is consequently a diameter of the circle. It has a chord DE, which joins the points where the parabola intersects the circle. We will call its radius r.Īnother perpendicular to the axis, circular cross-section of the cone is farther from the apex A than the one just described. This cross-section is circular, but appears elliptical when viewed obliquely, as is shown in the diagram. According to the definition of a parabola as a conic section, the boundary of this pink cross-section EPD is a parabola.Ī cross-section perpendicular to the axis of the cone passes through the vertex P of the parabola. An inclined cross-section of the cone, shown in pink, is inclined from the axis by the same angle θ, as the side of the cone. The diagram represents a cone with its axis AV. The graph of a quadratic function y = a x 2 + b x + c is the eccentricity).Ĭonic section and quadratic form Diagram, description, and definitions Cone with cross-sections Another description of a parabola is as a conic section, created from the intersection of a right circular conical surface and a plane parallel to another plane that is tangential to the conical surface. The parabola is the locus of points in that plane that are equidistant from the directrix and the focus. One description of a parabola involves a point (the focus) and a line (the directrix). It fits several superficially different mathematical descriptions, which can all be proved to define exactly the same curves. In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped. The parabola is a member of the family of conic sections. In this orientation, it extends infinitely to the left, right, and upward. Part of a parabola (blue), with various features (other colours). Look up parabola in Wiktionary, the free dictionary.
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