1 “...Turtle Geometry presents an innovative program of mathematical discovery that demonstrates how...”

2 “...Basic concepts with Turtle graphics in Python...”

3 Subjects: “...turtles...”

4 Subjects: “...Chinese soft-shelled turtles...”

5 Subjects: “...turtles...”

6 Subjects: “...sea turtles...”

7 Subjects: “...vertebrate reptilian turtle...”

8 Subjects: “...Chinese soft-shelled turtle...”

9 “...In 1996, Covel colaunched TurtleTrader.com. It has attracted millions of visitors. His first book...”

10 “... divination accounts, which were engraved on turtle shells and bovine scapulae in the late Shang dynasty (c...”