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Clickipedia




                   The stage is 360 pixels tall and 480 pixels wide.



                     UNDERSTANDING BLOCKS

                 Blocks are puzzle piece shapes that are used to give instructions to the computer.
                 A collection of inter-locked blocks, called script make a code in Scratch. When you
                 click on the Script, Scratch runs the blocks from top to bottom.

                 To use a block, simply select it and then drag it onto the scripts pane.

                 To remove a block from a script, just drag it to the left, away from the scripts
                 pane.

                 Some of the  common categories  of blocks are:  Motion,  Looks,  Sound, Pen,
                 Variables, Events, Control, Sensing, and Operators.


                   Block category                                           Use


                                         These blocks are used to place your sprites on the stage or
                          Motion         move them.

                                         These blocks control what your sprites and backdrop look
                          Looks          like.


                                         Events blocks control how the blocks in a script will start to
                          Events         run.


                                         These blocks are used to play or stop sounds.
                          Sound


                                         These blocks are used to draw shapes and patterns on the
                           Pen           stage, change the pen colour and size.


                                         These blocks control the blocks within your scripts, inserting
                         Control         conditional statements, loops, repeats and pauses.


                                         These blocks identify what's happening at a given point and
                         Sensing         make your sprites or background respond to user actions.

                                         These blocks let you make comparisons between or perform

                        Operators        arithmetic functions on different values.






                                                                                        Introduction to Scratch      71
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