Presentation Transcript
Slide 1:LOGO 1 UNDERSTANDING LOGO Language Oriented
Graphic Oriented Used to draw
shapes and figures Developed by
Seymour Papert LOGO Logo cursor
known as turtle
Logo cursor :LOGO 2 Logo cursor A cursor is a small blinking bar on the computer screen. It inserts text for us. Similarly, the Logo turtle draws for us. cursor
Slide 3:LOGO 3 Logo Figures
Slide 4:LOGO 4 Introducing Turtle A turtle looks like a triangle.
It has two parts:- Head and Tail
It draws a line when it moves in any direction.
This line is known as a trail. TRAIL TURTLE head tail
Slide 5:LOGO 5 CLICK on the LOGO icon on the desktop
A message “Welcome to LOGO”will appear on the screen.
Type HOME to bring turtle on the screen Starting LOGO First to set up your world.
PC Logo Version 3.0
(c) 1988 Harvard Associates, Inc.
Welcome to PC Logo. First to set up your world.
PC Logo Version 3.0 (c) 1988 Harvard Associates, Inc.
Welcome to PC Logo. ?HOME
Slide 6:LOGO 6 The upper portion of the logo screen is the drawing area known as the Graphic screen.
The lower portion is the text area known as the text screen.
The commands for the turtle also known as primitives are written in the text screen.
The turtle follows the commands and draws in the graphic screen. The Logo screen
Slide 7:LOGO 7
Slide 8:LOGO 8 Primitives These are orders given by you to the turtle.
Simple primitives put together make a Program.
Commands to the turtle are of two kinds
Movement commands
Forward (FD)
Backward (bk)
Direction commands
Right turn
Left turn
Slide 9:LOGO 9 ?FD 20
?RT 90
?FD 20
?RT 90
?FD 20
?RT 90
?FD 20
?RT 90 Program to draw a square
Slide 10:LOGO 10 MOVEMENT COMMANDS
Slide 11:LOGO 11 TURTLE'S LEFT AND RIGHT
Slide 12:LOGO 12 Direction commands
LET’S DRAW :LOGO 13 LET’S DRAW RECTANGLE ? FD 40 ? RT 90 ? FD 60 ? RT 90 ? FD 40 ? RT 90 ? FD 60
Slide 14:LOGO 14 BYE