Page 89 - 2629_Devagiri_C-3
P. 89

MOTION BLOCKS

                 Motion blocks let you control a sprite's movement on the stage, allowing it to move,
                 turn and change direction. They are blue in colour.


                 Some basic motion blocks used in Scratch and their descriptions are as follows:

                                                     This block makes  the  sprite  move  forward  and
                                                    backward, allowing it to travel in both directions.

                                  move  10  steps   For example: Move 10 steps moves the sprite forward
                                                    by  10 steps  or Move -10  steps  moves  the sprite
                                                    backward by 10 steps.


                                                     This block  makes  the sprite  turn to  the right
                              turn    15  degrees
                                                    (clockwise), rotating in a circle.

                                                     This block makes the sprite turn to the left
                              turn    15  degrees
                                                    (anticlockwise), rotating in the opposite direction.



                 EVENTS BLOCKS

                 Events blocks run the script on the stage and control the start of scripts. Without an

                 Events block, no program will run. They are light yellow in colour.

                 Some of the commonly used Event Blocks with their description are as follows:

                                                     This block starts  the script  when  the green flag  is
                                  when    clicked
                                                    clicked. It is used to begin a project.



                                                    This block starts the script when a chosen key on the
                        when  space    key pressed
                                                    keyboard is pressed.



                                                     This block runs the script when the sprite is clicked.
                               when this sprite clicked


                 LOOKS BLOCKS


                 Looks blocks changes how a sprite looks or what it says on the stage. They are
                 purple in colour.









                                                                                             Say Hello to Scratch 3  87
   84   85   86   87   88   89   90   91   92   93   94