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.

Features

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.

Suggested Activities

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»:

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

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

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

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

Aritm by MOB Aritm trains you in simple mental calculation. This program teaches its users the addition, subtraction, multiplication, and division tables. It employs a very effective method, which makes the process short with these useful tables

Dec2Bin Converter binary number to decimal;
Converter decimal number to binary;

Numbers Teach to your kids with this simple app...Enjoy

Simple Scientific Calculator Basic arithmetic operation, trigonometric function, solve linear and quadratic 2 and 3 variable

Random Math Table Random Math Table by Girish Padia V 2.00 S60 V5 S^3 Anna Belle J2ME
This application is useful the kids who just learn the mathematics table 1 to 10 and 11 to 20. This will help them to practice on it. don't require data connections

Trigonometry Trigonometry - Trigonometry is a branch of mathematics which deals with triangles, particularly triangles in a plane where one angle of the triangle is 90 degrees (right angled triangles), and a variety of other topological relations such as spheres, in other branches, such as spherical trigonometry

MobileMaths V1.01 MobileMaths V1.01
MobileMaths version 1.5
MobileMaths version 1.6
MobileMaths version 1.7
MobileMaths version 1.4
+
MathPro version 1

mathGame Mathematic game for student and general by indonesiasoftware.com

Graphviewer scientific equation solver You can calculate the function inflection points
Multiple functions can be plotted in different colors at once
The intersection points of the different equations are calculated and can be shown

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