Follow the pattern of sounds and lights as long as you can! Press the start game button to begin. Watch the computer and copy the pattern it makes. Complete the sequence in the right order to win.

It uses a very fast algorithm and generates high quality, smooth images. It is fully interactive, allowing for real-time mouse navigation and dynamic generation of the Julia fractal preview.

OpenGL-rendered 3D view of the fractals is also supported.

On the one hand, GeoGebra is a dynamic geometry system. You can do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards.

On the other hand, equations and coordinates can be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors and points, finds derivatives and integrals of functions and offers commands like Root or Extremum.

These two views are characteristic of GeoGebra: an expression in the algebra window corresponds to an object in the geometry window and vice versa.

1. Exercise Fraction Task - in this exercise you have to solve a given fraction task. You have to enter numerator and denominator. This is the main exercise. The difficulty of this task can be influenced by the user. The user can decide if he wants to solve tasks with addition/substraction and/or multiplication/division. Also he can set the number of fractions and the maximum size of the main denominator.
2. Exercise Comparison - in this exercise you have to compare the size of 2 given fractions.
3. Exercise Conversion - in this exercise you have to convert a given number into a fraction.
4. Exercise Factorization - in this exercise you have to factorize a given number into its prime factors. Factorization is important while finding the main denominator of 2 fractions.

It has built in a powerfull parser. You can plot different functions simultaneously and combine their function terms to build new functions. KmPlot supports functions with parameters and functions in polar coordinates. Several grid modes are possible. Plots may be printed with high precision in correct scale.

are configurable, like grid size and the fonts and colors of number ranges. A countdown timer is used to keep the player's attention focused. A list of high scores is maintained.

• Browse the maps clicking in a map division to see it's name
• The game tells you a map division name and you have to click on it
• The game tells you a capital and you have to guess the division it belongs to
• The game tells you a division and you have to guess its capital
• The game shows you a map division flag and you have to guess its name
• The game tells you a map division name and you have to guess its flag

KTechlab consists of several well-integrated components:

• A circuit simulator, capable of simulating logic, linear devices and some nonlinear devices.
• Integration with gpsim, allowing PICs to be simulated in circuit.
• A schematic editor, which provides a rich real-time feedback of the simulation.
• A flowchart editor, allowing PIC programs to be constructed visually.
• MicroBASIC; a BASIC-like compiler for PICs, written as a companion program to KTechlab.
• An embedded Kate part, which provides a powerful editor for PIC programs.
• Integrated assembler and disassembler via gpasm and gpdasm..

TkGate Features:

• Easy to use point-and-click user interface.
• Customizable color configuration.
• Intelligent placement and movement of wires.
• Multi-bit buses.
• Hierarchical design through user defined modules.
• Six valued logic including 0, 1, floating, unknown, "low" and "high".
• Wide range of circuit elements including:
  • Basic gates (AND, OR, etc.)
  • Switch-level NMOS and PMOS transistors
  • Tristate buffers
  • Alu components (Adders, shifters, multipliers)
  • Memory elements (Registers, RAMs, ROMs)
  • A "tty" element which allows the creation of interactive circuits.
• Graphical display of simulation results.
• Breakpoints, single-step and clock-step simulator control.
• Includes a generic microcode/macrocode compiler for creating memory initialization files.
• Simulations can be controlled through the GUI or through script files.
• Verilog-like save file format.
• Hyperlinks to move about in circuit or load other files.
• Can be configured to use Japanese interface (see README file).
• Supports static critical path analysis.