Dr. Scheme: What I learned in Dr. Scheme is how to do different graphics using different kinds of drawing
commands. I learned how to use coding to make different images. By only using lines, rectangles, and circles you could make many kinds of images.
(start 640 480)
(draw-solid-disk(make-posn 70 180)30'black)
(draw-solid-disk(make-posn 210 180)30'black)
(draw-solid-rect(make-posn 160 120)100 60'blue)
(draw-solid-rect(make-posn 40 97)160 83'blue)
(draw-solid-rect(make-posn 240 120)20 20'red)
(draw-solid-rect(make-posn 40 160)20 20'red)
(draw-solid-rect(make-posn 141 102)50 35'white)
(draw-solid-rect(make-posn 58 102)50 35'white)
(draw-solid-disk(make-posn 390 60)50'yellow)
(draw-circle(make-posn 390 63)30'red)
(draw-solid-disk(make-posn 390 60)30'yellow)
(draw-solid-disk(make-posn 370 40)10'black)
(draw-solid-disk(make-posn 410 40)10'black)
(draw-solid-disk(make-posn 370 40)4'blue)
(draw-solid-disk(make-posn 410 40)4'blue)
(draw-solid-line(make-posn 350 90)(make-posn 310 109)'red)
(draw-solid-line(make-posn 340 60)(make-posn 310 109)'red)
(draw-solid-line(make-posn 340 60)(make-posn 293 63)'red)
(draw-solid-line(make-posn 344 38)(make-posn 293 63)'red)
(draw-solid-line(make-posn 344 38)(make-posn 290 21)'red)
(draw-solid-line(make-posn 290 21)(make-posn 362 17)'red)
(draw-solid-line(make-posn 362 17)(make-posn 325 0)'red)
(draw-solid-line(make-posn 378 10)(make-posn 370 0)'red)
(draw-solid-line(make-posn 350 90)(make-posn 370 138)'red)
(draw-solid-line(make-posn 370 138)(make-posn 390 110)'red)