Quad2Go - Explorations with Quad2Go are especially appropriate for 11-12 year old students. Teaching geometry to students of this age focuses on the critical attributes of quadrilaterals and on the hierarchical relations among them. Learning means identifying critical attributes and non-critical attributes. For example, "four sides," "two pairs of parallel sides," or "two pairs of equal opposite angles" are some of the critical attributes of a parallelogram; "two long sides and two short sides" or "two acute angles and two obtuse angles" are non-critical attributes. Learning in this sense means learning to analyze the attributes of different quads, to distinguish between their critical and non-critical attributes, and learning the hierarchy among quads. Quad2Go provides many examples of randomly constructed quads. Each example can be changed by dragging either its vertices or sides.
Quad2Go is a handy tool for learning about quadrilaterals by generating examples, observing, and experimenting with examples with a view toward forming generalized conjectures. Similarly to frequently used Dynamic Geometry Environments (DGE) such as the Geometric Supposer, Cabri Geometry, and the Geometer Sketchpad, Quad2Go offers geometric objects, tools to manipulate them, and measurement tools. It is limited to quadrilaterals and the construction of diagonals. Quad2Go allows users to construct, view, and transform quadrilaterals compatible with the ones constructed with straight edge and compass, to measure lengths, angles, and areas, and to manipulate the construction by dragging and transforming its shape. Dragging allows changing a shape by direct translation of parts of its components on the screen. Learning by DGE is closely related to theories of constructivist learning, in which meaning is constructed through the learner's active participation.
An exploration of hierarchy of quads
Use the Shapes menu to construct parallelograms, kites, trapezoids, and rhombi.
From the Quad2Go menu choose to view parallelograms.
Here is a construction of a parallelogram. Why?
Did you obtain a rectangle as one of the parallelograms? Do you agree that it is a rectangle? Do you think you can get a rectangle? Why?
Under which shape's choice would you expect to obtain a square? Why?
An exploration task regarding non standard classification
a square, a rhombus, and a kite are quads that share the following property: the angle between their diagonals is a right angle. Quads with this property are called orthodiagonal quads.
Discover other special properties of this class of quads.
Implementing knowledge about triangles
In any convex quadrilateral the two diagonals create eight triangles. For each type of given quadrilateral:
Identify the 8 triangles
Identify 4 congruent triangles; explain your decision.
Identify 2 congruent triangles; explain your decision.
Identify similar triangles; explain your decision.
Requirements:· Java Enabled (J2ME) Phone - Profile/MIDP-2.0 Configuration/CLDC-1.1
· Screen Resolution: 128 x 96 and above
Other Java Freeware of Developer «Math4Mobile»:
Graph2Go Graph2Go - Graphing calculators are instrumental in teaching and learning mathematics. It is an environment that supports conceptual understanding of functions in general, and school algebra and real analysis in particular. Especially, it enhances connections between graphic and symbolic representations
Solve2Go Solve2Go - supports solving equations and inequalities by means of conjectures based on visual thinking. Conjectures can be refuted or supported by examples provided by the tool, and should be proved using symbolic manipulations on paper.
Equations: when we want to know for which values of x the two functions are equal
Sketch2Go Sketch2Go - encourages visual exploration of phenomena by providing qualitative indication of the ways in which the sketch drawn by the user changes. The sketch is a diagrammatic representation that attempts to help the viewer focus on the principles rather than on tedious details of the represented phenomenon. Phenomenon can refer to processes outside of mathematics (e
Fit2Go Fit2Go supports exploration and modeling activities. It supports data collection by proposing a model that can appropriately describe the user's data. The tool highlights the numeric aspects of a phenomenon. Together, Sketch2Go and Fit2Go provide a comprehensive view of models and modeling
TouchSheet_ME TouchSheet_ME - The full version of TouchSheet programm (for touchscreen mobile phones) is a revolutionary mathematical tool for mobile phones. The program is must-have for students, engineers and researchers. TouchSheet program includes four (04) applications (Statistics, Curve fitting, Interpolation and Matrix operations) with a large of features
mPustakAdd Mathematics Practice app that lets you learn with a lot of fun!
Bloft Bloft (BLobby and sOFT) is a 2D physics engine for J2ME phones with MIDP support. It supports soft bodies only in contrast with the DyMiX Engine. The soft body is a body which can be deformed - like a gummy ball or a plastic bag filled with liquid for example
mPustakSubtract Mathematics Practice app that lets you learn with a lot of fun!
Dec2Bin Converter binary number to decimal;
Converter decimal number to binary;
Matrix MATRIX multiplication to calculate square , cube , Inverse of a matrix ,Eigen Values , Derogatory Matrix
AnyUok Science Manual Science Manual is combination of Unit Convert, Scientific Constants and Chemical Elements.
It contains more than 676 units grouped in 38 categories, 112 chemical elements and more than 110 scientific constants sorted in 5 ategories
TouchMaths TouchMaths - The full version of TouchMaths programm (for touchscreen mobile phones) is a revolutionary mathematical tool for mobile phones. The program is must-have for students, engineers and researchers
Math for Kids - Arabic Math for Kids - Arabic - Welcome to AL KALAM mobile application. You can using this application for learn 1, 2, 3 in arabic. Have fun learning with AL KALAM mobile application. for another application please download from http://m.alkalam.asia. use AL KALAM, for listing the product of AL KALAM. Learn and play, highly recommended by education experts
SimulME SimulME is a mobile application with Queueing calculator, Stopwatch, Monte Carlo simulation, Random Number Generator (RNG), Probability distributions, Kolmogorov-Smirnov and Chi-square tests
Comments on Quad2Go:
Comments not found
JavaMobiles - Free Java games download for mobile phones. Java Applications, Software, JAR, Apps for Nokia, Samsung, touch screen, 240x320 screen