Turtle graphics now also appear in other programming languages, sometimes as function or class libraries. Advanced turtle graphics packages provide for multiple concurrently acting turtles with velocity. I advocate going for walks with good local maps in hand. In fact the best maps are those for beginning orienteering courses. Orienteering is a sport where you look for checkpoints in the woods using a detailed topographical map.
Advanced courses can require more serious compass use.
The left and right turns, scaled steps, planning, problem solving, even the geometry, linear algebra and fractals are there if you care to pursue them. ISTE also supports SIGLogo, a special interest group for Logo-using educators. See Books below. Versions are available for Unix systems, DOS machines, and Macintoys. The PC distribution includes two executable programs.