Final answer:
To change the turtle's movement speed in turtle graphics, the 'speed()' command is used with a value between 1 and 10 or 0 for no animation.
Step-by-step explanation:
To change the speed at which the turtle moves in a turtle graphics program, you would use the speed() command. Turtle graphics is commonly used in Python programming to introduce graphical programming. The speed() command is versatile and allows you to set the speed of the turtle's movement with values ranging from 1 (slowest) to 10 (fastest) or 0 for no animation.
For example, if you wanted to set the turtle to the fastest speed, you would write:
turtle.speed(10)
Conversely, to set the turtle to a very slow speed, you might use:
turtle.speed(1)
Remember that setting the speed to 0 will cause the turtle to move instantaneously, without displaying the animation of its movement.