Now, let's talk about these command one by one. The FD commands moves the turtle forwards by a certain number of pixels. In this example, it's 100, but you can type in any number you want:
As you can see, in the little blank space below I typed FD(or Forward) 100 and the turtle moved by 100 pixels.
Now, let's move to the BK command.
The BK command moves the turtle
backwards for a certain number of pixels, in this case, it's 100:
As you can see, I typed BK 100 and pressed ENTER (You can also press Execute at the bottom right corner if you want to) and the turtle moved 100 pixels back.
This is pretty easy, FD, BK...
but can you turn the turtle?
In fact, you can. By entering the command RT (or right) you can move the turtle right for a certain number of degrees, as shown in this example:
As presented, I wrote RT 90(the number of degrees) and the turtle moved to the right for a certain number of degrees ,in this case, 90. You can do the same thing, just by using the LT command and therefore moving the turtle a certain number of degrees to the left:
As shown, I typed LT(You can also type "Left" if you want to)an the number of degees I want the turtle to move to the left.
Now, before we move on, Let's repeat. So, today we learned 4 new commands:
FD (Moves the turtle forwards for a certain number of pixels you tell it to)
BK (Moves the turtle backwards for a certain number of pixels)
RT (Moves the turtle to the right by a certain number of degrees you tell it to)
LT (Moves the turtle to the left by a certain number of degrees you tell it to)
So, before we move on, here is a quick task for you to draw in FMSLogo. When you succeed, you will know you have learned and know how and when to use these commands!
Try to draw a drawing as shown in the example(the lines above are 45 degrees from each other):
Have you done it?
Good job! If you didn't please consider downloading FMSLogo here.Also, I would recommend to play with these commands, try to draw something more complex, and come back in a few days.
Now, continue exploring FMSLogo and go to The Coloring lesson to learn even more. If that is not interesting to you, you can just go to The Program Basics chapter (the color one is optional)!