Is there a turtle graphics Library of blocks?

Hi everyone:)

Is there a turtle graphics library of blocks?
Could someone point me out to its documentation

https://gallery.appinventor.mit.edu/?galleryid=6739c807-5bf9-4b49-a765-8e4b16e8bb97

http://ai2.appinventor.mit.edu/?galleryId=5214268554739712

I am super new to MIT APP Inventor.
I am preparing a first programming course for 11-14 year old,
Centered around cool math drawings and procedural art.

I would also appreciate references to art projects on MIT APP if you know any
Teaching advice and teaching resources are super Welcome c:

Also see
https://www.google.com/search?q=ai2+course+in+a+box

Try Canvas in Drawing and Animation

Also see