Four Simple Turtle Graphs To Play With Kids

July 7, 2014
By

[This article was first published on Ripples, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)
Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

Technology is just a tool: in terms of getting the kids working together and motivating them, the teacher is the most important (Bill Gates)

Some days ago I read this article in R-bloggers and I discovered the TurtleGraphics package. I knew about turtle graphics long time ago and I was thinking of writing a post about them, doing some draw on my own using this technique. In fact, some of my previous drawings could have been done using this package.

Turtle graphics are a good tool to teach kids some very important mathematical and computational concepts such as length, coordinates, location, angles, iterations … Small changes in some of this parameters (especially in angles) can produce very different drawings. Those who want to know more about turtle graphics can read the Wikipedia article.

Following you can find four simple graphics preceded by the code to generate them. Please, send me your creations if you want:

library(TurtleGraphics)
turtle_init()
turtle_col("gray25")
for (i in 1:150) {
  turtle_forward(dist=1+0.5*i)
  turtle_right(angle=89.5)}
turtle_hide()

turtle1

library(TurtleGraphics)
turtle_init()
turtle_col("gray25")
turtle_right(angle=234)
for (i in 1:100) {
  turtle_forward(dist=0.9*i)
  turtle_right(angle=144.3)}
turtle_hide()

turtle2

library(TurtleGraphics)
turtle_init()
turtle_col("gray25")
turtle_setpos(48,36)
d=50
for (i in 1:300) {
  turtle_forward(dist=d)
  if (i%%4==0) {
    turtle_right(angle=75)
    d=d*.95}
else turtle_right(angle=90)}
turtle_hide()

turtle3

library(TurtleGraphics)
turtle_init()
turtle_col("gray25")
turtle_setpos(50,35)
turtle_right(angle=30)
d=25
turtle_setpos(50-d/2,50-d/2*tan(pi/6))
for (i in 1:100) {
  turtle_forward(dist=d)
  d=d+.5
  turtle_right(angle=120+1)}
turtle_hide()

turtle4

To leave a comment for the author, please follow the link and comment on their blog: Ripples.

R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job.
Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.



If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Comments are closed.

Search R-bloggers

Sponsors

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)