Free educational software for mac

Solar System Simulator Educational is designed to simulate astronomical phenomena of the solar system. Based on accurate astronomical data, it reproduces the motions of the solar system (the sun, planets, satellites, comets, asteroids, etc.) three-dimensionally on your Mac.
While traveling across time between the past, present, and future, you can move freely to any cosmic location in space or any celestial body in the solar system and experience the various astronomical phenomena that take place in the solar system.
The menu list will allow easy selection of various astronomical phenomena. The operation panel will allow you to perform operations and settings freely so that you can enjoy your own special voyage through the solar system.
Enhancements:
- High resolution textures for Mid/High quality settings
- Some small bugs fixed.

keduca is an educational project to enable the creation and revision of form-based tests and exams.
You can choose from a multitude of tests of all shapes and sizes
Enhancements:
- Preferences options and new result dialog.

Etchelon Macdoodle 2.3 is designed as a friendly paint program for kids with precious educational suggestions.

Major Features:

1. Aimed at kids between 3 and 12 years of age.
2. 26 pictures to color (the program can be extended to include further sets of 26 outline images). 260 picture suggestions - divided into ten levels.
3. Macdoodle speaks the picture suggestions.
4. Fade out - fade in between pictures.
5. Pictures can be saved to Mac-standard format (ready for printing).
6. Button controls to the major tools: color palette, pen, paint-pot fill and brush tools.
7. Help messages displayed at bottom of screen. "Protection Window"stops little ones clicking off the window and into Finder.

Requirements:

• PPCMac OS 8 or higher Speech Manager

EdenMath 1.1.1 gives you a nice chance to get a useful scientific calculator which does standard arithmetic, probability, and trigonometric functions. As an educational and scientific tool, EdenMath is freeware, costing the user nothing.

The PDP-8/E Simulator is an emulator for the Digital Equipment Corporation PDP-8/E minicomputer, a famouse computer of the early 1970 years. The simulator, first released 1994, provides a comfortable user interface for running, writing and debugging PDP-8 software on a Mac and to learn about the internal functioning of a computer.
It has a console with switches and flashing lights enabling the user to operate the PDP-8 like a hardware machine. Maybe the simulator is of interest for a larger audience using it for educational purposes or as a remembrance to the good old time of the computer age.
The simulator and its source code are published under the GNU General Public License.
Enhancements:
- The version 1.5 release includes a TSC8-75 board that enables the emulated PDP-8/E to run the ETOS time sharing operating system.
- Compared to the version 1.5 public beta, there are only minor user interface and Panther compatibility improvements.

Consh is an open source, Python based and extremely simple Unix shell (like bash or csh or ksh). Consh is almost certainly too simplistic for you to actually use as a day-to-day shell.
Its only real use is learning how Unix shells work, by seeing the interaction between the fork, exec and wait system calls coded up concisely (< 100 LOC) in a friendly and easy-to-read language.
If you are after a somewhat more serious attempt at implementing a Unix shell in Python, you can check out Pysh or Pyshell, which seem to be more serious projects.
NOTE: Consh is distributed and licensed under a standard 3-clause BSD license.

System requirements:
- Python