Graphics Programming Advice

Good morning folks,

A newby here, so a big thank you, in advance to everyone. Much appreciated!!.

Please forgive me if this post is in the wrong "place".

Some years ago now, I studied and done (did ?) some Computer Programming.... ....Graphics mainly.......in BASIC (Basica, GW-Basic mainly) and Pascal (Borland Turbo Pascal).

I still do have a small collection of such *.bas and *.pas source code.

Want to teach Sons now Graphics Programming, by re-visiting those source code examples that I do have, plus introduce other source code examples....... ...Yep, these 2 languages are older now I know, but still want to teach our Sons. Have DOSbox and BTP 7.0 and a few different flavors of BASIC (GW, Qbasic, QB64, Dark Basic etc etc).

My inquiry is does anyone have any *.bas and *.pas graphics demos source code that they can share ?.........thing s beyond just the basic line, circle etc etc commands....... ..things like plasma, fire, 3D, advanced use of line, circle, putpixel, animation etc etc.

Yep, I have consulted Mr, Google, but not a great deal of source codes in BAS and PAS alas :-(.

Thank you so much again!!,
Ian.