This is edusoft.htm (educational software for hi-schools and colleges):

Elementary:

There is one educational program quadwith.bas extension,

three educational programs cmplex1, cmplex2, trigo with .c extension:

Copy each listing separately and paste into notepad. Then run it through the

appropriate compiler and make an .exe file. Quadr clarifies the working of quadratic

equations; complex1 and complex 2 introduces you to complex numbers and complex

coding and trig (unfinished) gets you (at least partially) through trigonometry.

You may also find corresponding .exe files under the names:

uno.exe , dos1.exe , tres1.exe , quat1.exe in http://members.localnet.com/~mjkbmk/
 
 
 

Advanced:

There are also three programs with  .for extensions. It is suggested that you obtain

their listings by copying and pasting to notepad and run them through a Fortran compiler.

The name of the first program is   cmplx. It illustrates the intricacies of complex algebra

programming. The name of the second program is fourier and it illustrates the working of

Fourier anlysis and synthesis. The third program's name is grafit; it graphs the output of the

second program. Whenever you need to run any one of them just copy the listing to a Fortran

compiler and make an .exe file. Or you may simply click on:   JUNI    FOUR   GRAP
 

There is also a program named  spdtst. It tests the speed of your processor. It comes with c

extension. To list it click on spdtst. To run it click on speed.